diff --git a/.gitignore b/.gitignore
index 08d8ba5..0a16d2d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,3 @@
-bin/
-obj/
 tmp/
+build/
 .vscode/
\ No newline at end of file
diff --git a/Makefile b/Makefile
index 5ff6e30..04f37c3 100644
--- a/Makefile
+++ b/Makefile
@@ -1,32 +1,29 @@
-CPPFLAGS := -Iinclude -MMD -MP
-CFLAGS   := -Wall
-LDFLAGS  := -Llib
-LDLIBS   := -lm
+TARGET_EXEC ?= server
 
-SRC_DIR := src
-OBJ_DIR := obj
-BIN_DIR := bin
+BUILD_DIR ?= ./build
+SRC_DIRS ?= ./src
 
-EXE := $(BIN_DIR)/server
+SRCS := $(shell find $(SRC_DIRS) -name *.c)
+OBJS := $(SRCS:%=$(BUILD_DIR)/%.o)
+DEPS := $(OBJS:.o=.d)
 
-SRC := $(wildcard $(SRC_DIR)/*.c)
+INC_DIRS := $(shell find $(SRC_DIRS) -type d)
+INC_FLAGS := $(addprefix -I,$(INC_DIRS))
 
-OBJ := $(SRC:$(SRC_DIR)/%.c=$(OBJ_DIR)/%.o)
+CPPFLAGS ?= $(INC_FLAGS) -MMD -MP
 
-all: $(EXE)
+$(BUILD_DIR)/$(TARGET_EXEC): $(OBJS)
+	$(CC) $(OBJS) -o $@ $(LDFLAGS)
 
-$(EXE): $(OBJ) | $(BIN_DIR)
-	$(CC) $(LDFLAGS) $^ $(LDLIBS) -o $@
-
-$(OBJ_DIR)/%.o: $(SRC_DIR)/%.c | $(OBJ_DIR)
+$(BUILD_DIR)/%.c.o: %.c
+	$(MKDIR_P) $(dir $@)
 	$(CC) $(CPPFLAGS) $(CFLAGS) -c $< -o $@
 
-$(BIN_DIR) $(OBJ_DIR):
-	mkdir -p $@
+.PHONY: clean
 
-clean: 
-	@$(RM) -rv $(BIN_DIR) $(OBJ_DIR)
+clean:
+	$(RM) -r $(BUILD_DIR)
 
--include $(OBJ:.o=.d)
+-include $(DEPS)
 
-.PHONY: all, clean
\ No newline at end of file
+MKDIR_P ?= mkdir -p
diff --git a/include/db_op/blogpost.h b/include/db_op/blogpost.h
new file mode 100644
index 0000000..16a4ba1
--- /dev/null
+++ b/include/db_op/blogpost.h
@@ -0,0 +1,11 @@
+#include <stdio.h>
+#include <unistd.h>
+
+typedef struct
+{
+    char *header;
+    char *content;
+    char **tags;
+    char *author;
+    unsigned int key;
+} blogpost_t;
\ No newline at end of file
diff --git a/include/db_op/db.h b/include/db_op/db.h
new file mode 100644
index 0000000..7a31292
--- /dev/null
+++ b/include/db_op/db.h
@@ -0,0 +1,17 @@
+#include <fcntl.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+
+#include "./blogpost.h"
+
+#define LINE_SIZE 512
+
+int open_db(char *file_name, char *type, FILE **file, char ***head, int *head_length);
+int open_table(char *file_name, FILE **file);
+int read_head(FILE *file, char ***head);
+int get_entry(FILE *file, void **rec, int type, int n, int (*process_line)(char *, void **, int));
+int append_table(FILE *file, void *rec, int type, char *(*process_line)(void *, int));
+int remove_entry(FILE *file, int n);
diff --git a/include/file.h b/include/file_op/file.h
similarity index 59%
rename from include/file.h
rename to include/file_op/file.h
index 178358a..066c88f 100644
--- a/include/file.h
+++ b/include/file_op/file.h
@@ -1,3 +1,10 @@
+#include <string.h>
+#include <stdlib.h>
+#include <sys/sendfile.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+
 struct file_s
 {
     char *path;
diff --git a/include/mime.h b/include/file_op/mime.h
similarity index 63%
rename from include/mime.h
rename to include/file_op/mime.h
index aec5cf4..c7dd251 100644
--- a/include/mime.h
+++ b/include/file_op/mime.h
@@ -1 +1,3 @@
+#include <string.h>
+
 char *get_mime_type(char *file_path);
\ No newline at end of file
diff --git a/include/netw.h b/include/netw.h
deleted file mode 100644
index 8896080..0000000
--- a/include/netw.h
+++ /dev/null
@@ -1,2 +0,0 @@
-int get_listener_socket(char *port);
-void *get_in_addr(struct sockaddr *sa);
\ No newline at end of file
diff --git a/include/netw_op/netw.h b/include/netw_op/netw.h
new file mode 100644
index 0000000..70645a9
--- /dev/null
+++ b/include/netw_op/netw.h
@@ -0,0 +1,8 @@
+#include <string.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <unistd.h>
+#include <netdb.h>
+
+int get_listener_socket(char *port);
+void *get_in_addr(struct sockaddr *sa);
\ No newline at end of file
diff --git a/include/request.h b/include/netw_op/request.h
similarity index 64%
rename from include/request.h
rename to include/netw_op/request.h
index 9c7edbb..4f07f0e 100644
--- a/include/request.h
+++ b/include/netw_op/request.h
@@ -1,3 +1,13 @@
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#include <sys/types.h>
+#include <sys/socket.h>
+
 struct header_s {
     char * str;
     size_t size;
diff --git a/include/utils_op/arr.h b/include/utils_op/arr.h
new file mode 100644
index 0000000..1f27af0
--- /dev/null
+++ b/include/utils_op/arr.h
@@ -0,0 +1,5 @@
+#include <string.h>
+#include <stdlib.h>
+
+void insert_to_arr(char ***arr, size_t length, char *value);
+void free_arr(char **arr, int length);
\ No newline at end of file
diff --git a/include/utils_op/llist.h b/include/utils_op/llist.h
new file mode 100644
index 0000000..e69de29
diff --git a/include/utils.h b/include/utils_op/utils.h
similarity index 63%
rename from include/utils.h
rename to include/utils_op/utils.h
index 04566f5..d89f556 100644
--- a/include/utils.h
+++ b/include/utils_op/utils.h
@@ -1,3 +1,8 @@
+#include <stdio.h>
+#include <string.h>
+#include <ctype.h>
+#include <stdlib.h>
+
 void err_msg(char *msg);
 char *add_to_front(char **str1, char *str2);
 char *get_status_message(int status_code);
diff --git a/src/db_op/blogpost.c b/src/db_op/blogpost.c
new file mode 100644
index 0000000..009ecb2
--- /dev/null
+++ b/src/db_op/blogpost.c
@@ -0,0 +1 @@
+#include "../../include/db_op/blogpost.h"
diff --git a/src/db_op/db.c b/src/db_op/db.c
new file mode 100644
index 0000000..ec24d14
--- /dev/null
+++ b/src/db_op/db.c
@@ -0,0 +1,233 @@
+#include "../../include/db_op/db.h"
+#include "../../include/utils_op/utils.h"
+#include "../../include/utils_op/arr.h"
+
+/**
+ * @brief Opens a table of specified type. If no such table, creates one and returns 1
+ * 
+ * @param file_name 
+ * @param type 
+ * @param file 
+ * @param head 
+ * @param head_length 
+ * @return int 
+ */
+int open_db(char *file_name, char *type, FILE **file, char ***head, int *head_length)
+{
+    FILE *root_file;
+    if ((root_file = fopen(file_name, "a+")) == NULL)
+    {
+        err_msg("can't open database file");
+        return -1;
+    }
+
+    char *buff = NULL;
+    size_t size = LINE_SIZE;
+
+    while (getline(&buff, &size, root_file) >= 0)
+    {
+        if (strcmp(type, strtok(buff, " ")) == 0)
+        {
+            int ret = open_table(strtok(NULL, "\n"), file);
+
+            *head_length = read_head(*file, head);
+
+            fclose(root_file);
+
+            return ret;
+        }
+    }
+
+    struct stat st = {0};
+    if (stat("./db", &st) == -1)
+    {
+        mkdir("./db", 0700);
+    }
+
+    int table_file_name_size = snprintf(NULL, 0, "./db/%s.csv", type) + 1;
+    char *table_file_name = malloc(table_file_name_size);
+    snprintf(table_file_name, table_file_name_size, "./db/%s.csv", type);
+
+    fseek(root_file, 0, SEEK_SET);
+    fprintf(root_file, "%s %s\n", type, table_file_name);
+
+    fclose(root_file);
+
+    int ret = open_table(table_file_name, file);
+
+    free(table_file_name);
+
+    return 1;
+}
+
+/**
+ * @brief Open table file
+ * 
+ * @param file_name 
+ * @param file 
+ * @return int -1 if couldn't open file
+ */
+int open_table(char *file_name, FILE **file)
+{
+    if ((*file = fopen(file_name, "a+")) == NULL)
+    {
+        err_msg("can't open table file");
+        return -1;
+    }
+
+    return 0;
+}
+
+/**
+ * @brief Read table head
+ * 
+ * @param file 
+ * @param head 
+ * @return int 
+ */
+int read_head(FILE *file, char ***head)
+{
+    fseek(file, 0, SEEK_SET);
+
+    int length = 0;
+    *head = malloc(length * sizeof(char *));
+
+    char buff[LINE_SIZE];
+    fscanf(file, "%[^\n]", buff);
+
+    char *tok;
+    int i = 0;
+    for (tok = strtok(buff, ";"); tok && *tok; tok = strtok(NULL, ";"))
+    {
+        insert_to_arr(head, length++, tok);
+    }
+
+    return length;
+}
+
+/**
+ * @brief Get the entry on line n
+ * 
+ * @param file 
+ * @param rec 
+ * @param type 
+ * @param n 
+ * @param process_line 
+ * @return int 
+ */
+int get_entry(FILE *file, void **rec, int type, int n, int (*process_line)(char *, void **, int))
+{
+    char *buff = NULL;
+    int i = 0;
+    size_t size = LINE_SIZE;
+
+    fseek(file, 0, SEEK_SET);
+
+    while (getline(&buff, &size, file) >= 0)
+    {
+        if (i == n)
+        {
+            int res = (*process_line)(buff, rec, type);
+            return res;
+        }
+        else
+            i++;
+    }
+
+    return -1;
+}
+
+/**
+ * @brief Insert entry to the end of table 
+ * 
+ * @param file 
+ * @param rec 
+ * @param type 
+ * @param process_line 
+ * @return int 
+ */
+int append_table(FILE *file, void *rec, int type, char *(*process_line)(void *, int))
+{
+    fseek(file, 0, SEEK_END);
+    char *buff = (*process_line)(rec, type);
+
+    if (fprintf(file, "%s", buff) < 0)
+        return -1;
+
+    free(buff);
+    return 0;
+}
+
+/**
+ * @brief Remove entry located at line n
+ * 
+ * @param file 
+ * @param n 
+ * @return int 
+ */
+int remove_entry(FILE *file, int n)
+{
+    if (n == 0)
+    {
+        err_msg("you shouldn't remove table head. Aborting");
+        return -1;
+    }
+
+    int tmp_file_name_length = snprintf(NULL, 0, "./db/tmp%d.csv", n) + 1;
+    char *tmp_file_name = malloc(tmp_file_name_length);
+    snprintf(tmp_file_name, tmp_file_name_length, "./db/tmp%d.csv", n);
+
+    FILE *tmp_file = fopen(tmp_file_name, "w");
+
+    char *buff = NULL;
+    size_t size = LINE_SIZE;
+
+    int i = 0;
+
+    fseek(file, 0, SEEK_SET);
+
+    while (getline(&buff, &size, file) >= 0)
+    {
+        if (i != n)
+        {
+            fprintf(tmp_file, "%s", buff);
+        }
+        i++;
+    }
+
+    fclose(tmp_file);
+    free(buff);
+
+    int fd = fileno(file);
+    char file_path[1024];
+
+    int path_length = snprintf(NULL, 0, "/proc/self/fd/%d", fd) + 1;
+    char *path = malloc(path_length);
+    snprintf(path, path_length, "/proc/self/fd/%d", fd);
+
+    memset(file_path, 0, sizeof(file_path));
+    ssize_t l = readlink(path, file_path, sizeof(file_path) - 1);
+    free(path);
+
+    if (l < 0)
+    {
+        err_msg("couldn't get table path");
+        return -1;
+    }
+    file_path[l] = '\0';
+
+    if (remove(file_path) != 0)
+    {
+        err_msg("couldn't remove original file");
+        return -1;
+    }
+
+    if (rename(tmp_file_name, file_path) != 0)
+    {
+        err_msg("couldn't rename tmp file");
+        return -1;
+    }
+    free(tmp_file_name);
+
+    return i;
+}
\ No newline at end of file
diff --git a/src/file.c b/src/file_op/file.c
similarity index 72%
rename from src/file.c
rename to src/file_op/file.c
index 032eab9..61812c8 100644
--- a/src/file.c
+++ b/src/file_op/file.c
@@ -1,12 +1,5 @@
-#include <string.h>
-#include <stdlib.h>
-#include <sys/sendfile.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <unistd.h>
-
-#include "../include/file.h"
-#include "../include/utils.h"
+#include "../../include/file_op/file.h"
+#include "../../include/utils_op/utils.h"
 
 /**
  * @brief Generate file path from request path provided
@@ -16,22 +9,22 @@
  */
 char *gen_file_path(char *req_path)
 {
-    char *path = (char *)malloc(sizeof req_path);
+    char *path = (char *)malloc(strlen(req_path) + 1);
     strcpy(path, req_path);
     if (strchr(req_path, '.') == NULL)
     {
         if (req_path[strlen(req_path) - 1] != '/')
         {
-            path = realloc(path, sizeof path + 1);
+            path = realloc(path, strlen(path) + 1);
             path = strcat(path, "/");
         }
-        path = realloc(path, sizeof path + sizeof "index.html");
+        path = realloc(path, strlen(path) + strlen("index.html") + 1);
         path = strcat(path, "index.html");
     }
 
     char *webroot = "static";
 
-    path = realloc(path, sizeof path + sizeof webroot);
+    path = realloc(path, strlen(path) + strlen(webroot));
     path = add_to_front(&path, webroot);
 
     return path;
@@ -47,7 +40,7 @@ char *gen_file_path(char *req_path)
 int send_file(int cli_fd, struct file_s *file)
 {
     off_t offset = 0;
-    if (sendfile(cli_fd, file->fd, &offset, file->size+2) < 0)
+    if (sendfile(cli_fd, file->fd, &offset, file->size + 2) < 0)
     {
         return -1;
     }
diff --git a/src/mime.c b/src/file_op/mime.c
similarity index 92%
rename from src/mime.c
rename to src/file_op/mime.c
index e8c5923..5ce87f3 100644
--- a/src/mime.c
+++ b/src/file_op/mime.c
@@ -1,7 +1,5 @@
-#include <string.h>
-
-#include "../include/mime.h"
-#include "../include/utils.h"
+#include "../../include/file_op/mime.h"
+#include "../../include/utils_op/utils.h"
 
 #define DEFAULT_mime_TYPE "application/octet-stream"
 
@@ -62,4 +60,4 @@ char *get_mime_type(char *file_path)
     }
 
     return DEFAULT_mime_TYPE;
-}
\ No newline at end of file
+}
diff --git a/src/netw.c b/src/netw_op/netw.c
similarity index 91%
rename from src/netw.c
rename to src/netw_op/netw.c
index 479e029..00d8d35 100644
--- a/src/netw.c
+++ b/src/netw_op/netw.c
@@ -1,11 +1,5 @@
-#include <string.h>
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <unistd.h>
-#include <netdb.h>
-
-#include "../include/netw.h"
-#include "../include/utils.h"
+#include "../../include/netw_op/netw.h"
+#include "../../include/utils_op/utils.h"
 
 #define BACKLOG 10
 
@@ -74,6 +68,7 @@ int get_listener_socket(char *port)
 
     return sockfd;
 }
+
 /** 
  * @brief Get address from sockaddr structure
  * 
diff --git a/src/request.c b/src/netw_op/request.c
similarity index 67%
rename from src/request.c
rename to src/netw_op/request.c
index fda892b..b31039e 100644
--- a/src/request.c
+++ b/src/netw_op/request.c
@@ -1,17 +1,33 @@
-#include <string.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <time.h>
-#include <fcntl.h>
-#include <unistd.h>
+#include "../../include/netw_op/request.h"
+#include "../../include/utils_op/utils.h"
+#include "../../include/file_op/file.h"
+#include "../../include/file_op/mime.h"
 
-#include <sys/types.h>
-#include <sys/socket.h>
+/**
+ * @brief Send 404 response
+ * 
+ * @param fd 
+ * @param path 
+ */
+void res_404(int fd, char *path)
+{
+    FILE *fp = fopen("static/404.html", "r");
+    const ssize_t fsize = 512;
+    char buf[fsize], msg[fsize];
 
-#include "../include/request.h"
-#include "../include/utils.h"
-#include "../include/file.h"
-#include "../include/mime.h"
+    fread(buf, fsize, 1, fp);
+    fclose(fp);
+
+    sprintf(msg, buf, path, path);
+
+    struct header_s *header = gen_header(404, strlen(msg), "text/html");
+    send(fd, header->str, header->size - 1, 0);
+
+    send(fd, msg, strlen(msg), 0);
+    close(fd);
+
+    printf("404 ERROR\n");
+}
 
 /**
  * @brief Get the path object
@@ -21,8 +37,7 @@
  */
 char *get_path(char *request)
 {
-    char *tmp = strtok(request, " ");
-    char *path = strtok(NULL, " ");
+    char *path = strtok(request, " ");
 
     return path;
 }
@@ -67,6 +82,7 @@ int send_response(int fd, char *req_path)
     char *file_path = gen_file_path(req_path);
 
     struct file_s *file = get_file_info(file_path);
+
     if (file == NULL)
     {
         char *msg = "Server error";
@@ -79,15 +95,20 @@ int send_response(int fd, char *req_path)
 
         return 0;
     }
+
     if (file->fd < 0)
     {
-        char *msg = "<html>\n<body>404, Not Found. Return to home? <a href=\"/\">Home</a></body><html/>";
+        // char *msg = "<html>\n<body>404, Not Found. Return to home? <a href=\"/\">Home</a></body><html/>";
 
-        struct header_s *header = gen_header(404, strlen(msg), "text/html");
-        send(fd, header->str, header->size - 1, 0);
+        // struct header_s *header = gen_header(404, strlen(msg), "text/html");
+        // send(fd, header->str, header->size - 1, 0);
 
-        send(fd, msg, strlen(msg), 0);
-        close(fd);
+        // send(fd, msg, strlen(msg), 0);
+        // close(fd);
+
+        // printf("404 ERROR\n");
+
+        res_404(fd, req_path);
 
         return 0;
     }
@@ -96,8 +117,6 @@ int send_response(int fd, char *req_path)
 
     struct header_s *header = gen_header(200, file->size, mime_type);
 
-    printf("\n---\n%s\n%ld\n---\n", header->str, header->size);
-
     int rv = send(fd, header->str, header->size - 1, 0);
 
     if (rv < 0)
@@ -141,6 +160,15 @@ void handle_get_request(int fd, char *request)
     char *path = get_path(request);
     printf("Client accessed path: %s\n", path);
 
+    if (strncmp(path, "/blog/", strlen("/blog/")) == 0)
+    {
+        char *id = (char *)malloc(strlen(path) - strlen("/blog/") + 1);
+        memmove(id, path + strlen("/blog/"), strlen(path) - strlen("/blog/") + 1);
+
+        printf("Blog post id = %s\n", id);
+    }
+    
+
     if (send_response(fd, path) < 0)
     {
         err_msg("couldn't send response");
diff --git a/src/server.c b/src/server.c
index c144f42..8a0c475 100644
--- a/src/server.c
+++ b/src/server.c
@@ -8,9 +8,9 @@
 #include <unistd.h>
 #include <netdb.h>
 
-#include "../include/netw.h"
-#include "../include/utils.h"
-#include "../include/request.h"
+#include "../include/netw_op/netw.h"
+#include "../include/utils_op/utils.h"
+#include "../include/netw_op/request.h"
 
 /**
  * @brief Handle client connection
@@ -19,7 +19,7 @@
  */
 void handle_connection(int fd)
 {
-    const size_t request_buffer_size = 512;
+    const size_t request_buffer_size = 1024;
     char request[request_buffer_size];
     char *prt;
 
@@ -31,7 +31,7 @@ void handle_connection(int fd)
         return;
     }
 
-    // printf("Request:\n%s---\n", request);
+    // printf("\nRequest:\n%s---\n", request);
 
     prt = strstr(request, " HTTP/");
     if (prt == NULL)
@@ -42,10 +42,12 @@ void handle_connection(int fd)
     {
         if (strncmp(request, "GET ", 4) == 0)
         {
+            memmove(request, request + 4, strlen(request) - 3);
             handle_get_request(fd, request);
         }
         else if (strncmp(request, "POST ", 5) == 0)
         {
+            memmove(request, request + 5, strlen(request) - 4);
             handle_post_request(fd, request);
         }
         else
@@ -97,7 +99,10 @@ int main(int argc, char *argv[])
         int pid = fork();
 
         if (pid < 0)
+        {
             err_msg("fork failed");
+            close(client_fd);
+        }
         else if (pid == 0)
         {
             close(listenfd);
diff --git a/src/utils_op/arr.c b/src/utils_op/arr.c
new file mode 100644
index 0000000..0a63a7f
--- /dev/null
+++ b/src/utils_op/arr.c
@@ -0,0 +1,31 @@
+#include "../../include/utils_op/arr.h"
+#include <stdio.h>
+
+/**
+ * @brief Insert string to the end of array of strings
+ * 
+ * @param arr 
+ * @param length 
+ * @param value 
+ */
+void insert_to_arr(char ***arr, size_t length, char *value)
+{
+    *arr = realloc(*arr, (length + 1) * sizeof(char *));
+
+    (*arr)[length] = malloc(strlen(value) * sizeof(char));
+    strcpy((*arr)[length], value);
+}
+
+/**
+ * @brief Free memory allocated for array of strings
+ * 
+ * @param arr 
+ * @param length 
+ */
+void free_arr(char **arr, int length)
+{
+    for (int i = 0; i < length; i++)
+        free(arr[i]);
+
+    free(arr);
+}
\ No newline at end of file
diff --git a/src/utils_op/llist.c b/src/utils_op/llist.c
new file mode 100644
index 0000000..65ebb7d
--- /dev/null
+++ b/src/utils_op/llist.c
@@ -0,0 +1,126 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+#define NUMBER 5
+
+typedef struct llist_s
+{
+    char *value;
+    struct llist_s *next;
+} llist_t;
+
+/**
+ * @brief Find item by number
+ * 
+ * @param list 
+ * @param n 
+ * @return llist_t* 
+ */
+llist_t *find_item(llist_t *list, int n)
+{
+    for (int i = 0; i < n; i++)
+        list = list->next;
+    return list;
+}
+
+/**
+ * @brief Fill llist with array
+ * 
+ * @param list 
+ * @param arr 
+ * @param n 
+ */
+void fill_with_arr(llist_t **list, char **arr, size_t n)
+{
+    llist_t *current = *list;
+    for (int i = 0; i < n; i++)
+    {
+        current->value = arr[i];
+        current = current->next;
+    }
+}
+
+/**
+ * @brief Print hole list
+ * 
+ * @param list 
+ */
+void print_llist(llist_t *list)
+{
+    llist_t *current = list;
+    int i = 0;
+
+    while (current != NULL)
+    {
+        printf("%d - %s\n", i + 1, current->value);
+        current = current->next;
+        i++;
+    }
+
+    printf("\n");
+}
+
+/**
+ * @brief Add value to the specified pos of llist
+ * 
+ * @param head 
+ * @param pos 
+ * @param value 
+ * @return llist_t* 
+ */
+llist_t *add_to_list(llist_t **head, int pos, char *value)
+{
+    if (pos == 1)
+    {
+        llist_t *new = malloc(sizeof(llist_t));
+        new->value = value;
+        new->next = *head;
+
+        *head = new;
+        return new;
+    }
+
+    llist_t *current = *head;
+
+    for (int i = 0; i < pos - 2; i++)
+        current = current->next;
+
+    llist_t *next = current->next;
+
+    current->next = malloc(sizeof(llist_t));
+    current->next->value = value;
+    current->next->next = next;
+
+    return current->next;
+}
+
+// int main()
+// {
+//     llist_t *head = malloc(sizeof(llist_t));
+
+//     head->value = "first";
+
+//     head->next = malloc(sizeof(llist_t));
+//     head->next->value = "second";
+
+//     head->next->next = malloc(sizeof(llist_t));
+//     head->next->next->value = "third";
+
+//     head->next->next->next = malloc(sizeof(llist_t));
+//     head->next->next->next->value = "forth";
+
+//     head->next->next->next->next = malloc(sizeof(llist_t));
+//     head->next->next->next->next->value = "fifth";
+
+//     head->next->next->next->next->next = malloc(sizeof(llist_t));
+//     head->next->next->next->next->next->value = "sixth";
+//     head->next->next->next->next->next->next = NULL;
+
+//     print_llist(head);
+
+//     add_to_list(&head, 9, "Hola");
+
+//     print_llist(head);
+
+//     return 0;
+// }
\ No newline at end of file
diff --git a/src/utils.c b/src/utils_op/utils.c
similarity index 89%
rename from src/utils.c
rename to src/utils_op/utils.c
index c73921a..574e1e0 100644
--- a/src/utils.c
+++ b/src/utils_op/utils.c
@@ -1,9 +1,4 @@
-#include <stdio.h>
-#include <string.h>
-#include <ctype.h>
-#include <stdlib.h>
-
-#include "../include/utils.h"
+#include "../../include/utils_op/utils.h"
 
 /** 
  * @brief Prints error
@@ -29,7 +24,7 @@ char *add_to_front(char **str1, char *str2)
     strcpy(*str1, str2);
     strcat(*str1, tmp);
 
-    free(tmp);
+    // free(tmp);
 
     return *str1;
 }
diff --git a/static/404.html b/static/404.html
index 234e744..4ddcb3b 100644
--- a/static/404.html
+++ b/static/404.html
@@ -7,7 +7,8 @@
 
 <body>
     <h1>Not Found</h1>
-    <p>The requested URL was not found on this server.</p>
+    <p>The requested URL: <a href="%s">%s</a> was not found on this server.</p>
+    <p>Return <a href="/">home</a></p>
 </body>
 
 </html>
\ No newline at end of file
diff --git a/static/about/index.html b/static/about/index.html
index 33001dc..b7591d9 100644
--- a/static/about/index.html
+++ b/static/about/index.html
@@ -5,10 +5,13 @@
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <title>About</title>
+    <link rel="stylesheet" href="../style.css">
 </head>
 
 <body>
-    <a href="../">Back</a>
+    <header>
+        <a href="/" id="logo"><img src="./logo.png" alt="logo" /></a>
+    </header>
     <p>Me</p>
     <img src="/about/me.jpg" alt="the pig" style="max-height: 200px;" />
 </body>
diff --git a/static/gallery/index.html b/static/gallery/index.html
new file mode 100644
index 0000000..3f15417
--- /dev/null
+++ b/static/gallery/index.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Gallery</title>
+    <link rel="stylesheet" href="../style.css">
+</head>
+<body>
+    <header>
+        <a href="/" id="logo"><img src="./logo.png" alt="logo" /></a>
+    </header>
+    %s
+</body>
+</html>
\ No newline at end of file
diff --git a/static/index.html b/static/index.html
index e969b51..e81235d 100644
--- a/static/index.html
+++ b/static/index.html
@@ -1,12 +1,35 @@
 <!DOCTYPE html>
 <html lang="en">
+
 <head>
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <title>Test</title>
+
+    <link rel="stylesheet" href="style.css">
 </head>
+
 <body>
-    <p>Testing paragraf</p>
-    <a href="./about">About me</a>
+    <header>
+        <a href="/" id="logo"><img src="./logo.png" alt="logo" /></a>
+    </header>
+    <main>
+        <h1>Home</h1>
+        <ul>
+            <li><a href="/about">About me</a></li>
+            <li><a href="/gallery">Gallery</a></li>
+            <li><a href="/projects">Projects</a></li>
+            <li><a href="/philosophy">Philosophy</a></li>
+        </ul>
+        <h1>Blog</h1>
+        <ul>
+            %s
+        </ul>
+        <h1>Tech articles</h1>
+        <ul>
+            %s
+        </ul>
+    </main>
 </body>
+
 </html>
\ No newline at end of file
diff --git a/static/logo.png b/static/logo.png
new file mode 100644
index 0000000..3825639
Binary files /dev/null and b/static/logo.png differ
diff --git a/static/style.css b/static/style.css
new file mode 100644
index 0000000..8d64ebb
--- /dev/null
+++ b/static/style.css
@@ -0,0 +1,48 @@
+* {
+    margin: 0;
+    padding: 0;
+    box-sizing: border-box;
+
+    font-family: "alte_haas_grotesk_bold", "Helvetica Neue", Helvetica, Arial;
+}
+
+::selection {
+    background-color: #000000;
+    color: #ffffff;
+}
+
+html {
+    min-height: 100vh;
+}
+
+body {
+    background-color: #ffffff;
+    border-top: solid 5px #000000;
+    padding: 45px;
+}
+
+header {
+    height: 65px;
+    margin-bottom: 20px;
+}
+
+header img {
+    height: 100%;
+}
+
+main h1 {
+    margin: 20px 0;
+}
+
+main li {
+    list-style-type: none;
+}
+
+li a {
+    color: #000000;
+    font-family: monospace;
+}
+
+li:hover a {
+    text-decoration: none;
+}