diff --git a/instance/Picture_Puzzle_web.db b/instance/Picture_Puzzle_web.db
index 0ac512f..321cb65 100644
Binary files a/instance/Picture_Puzzle_web.db and b/instance/Picture_Puzzle_web.db differ
diff --git a/main.py b/main.py
index 5b7fa3b..e6535ce 100644
--- a/main.py
+++ b/main.py
@@ -2,6 +2,7 @@ from flask import Flask, render_template, redirect, request, session, url_for
 from flask_sqlalchemy import SQLAlchemy
 from flask_admin import Admin
 from flask_admin.contrib.sqla import ModelView
+from werkzeug.security import generate_password_hash, check_password_hash
 
 app = Flask(__name__)
 app.secret_key = 'bebra'
@@ -12,11 +13,11 @@ class User(db.Model):
     id = db.Column(db.Integer, primary_key=True)
     username = db.Column(db.String(100), unique=True, nullable=False)
     password = db.Column(db.String(100), nullable=False)
-    email = db.Column(db.String(100), nullable=False)
-
+    email = db.Column(db.String(100), unique=True, nullable=False)
+    
 class Post(db.Model):
     id = db.Column(db.Integer, primary_key=True)
-    date_created = db.Column(db.String(100), unique=True, nullable=False)
+    date_created = db.Column(db.String(100), unique=False, nullable=False)
     alias = db.Column(db.String(100), unique=True, nullable=False)
     title = db.Column(db.String(100), nullable=False)
     image = db.Column(db.String(100), nullable=False)
@@ -30,26 +31,6 @@ def register_admin_views():
     admin.add_view(ModelView(User, db.session))
     admin.add_view(ModelView(Post, db.session))
 
-users = {
-    'thegamer': 'gamerpro1',
-    'justuser': 'randompassword'
-}
-
-posts = [
-    {"alias": "advices", "title": "Advices for game developers", "image": "advice.png"},
-    {"alias": "design-and-music", "title": "Design and music", "image": "design-and-music.png"},
-    {"alias": "expectations", "title": "Game expectations vs. reality", "image": "developers-be-like.png"},
-    {"alias": "update-1-1", "title": "Game 'Picture Puzzle remake' update 1.1", "image": "skeleton.png"},
-    {"alias": "chatgpt", "title": "ChatGPT as code helper", "image": "chatgpt-meme.png"},
-    {"alias": "difficulties", "title": "Difficulties while making game", "image": "staircase-fail.png"},
-    {"alias": "how-it-was-made", "title": "How the 'Picture Puzzle remake' was made", "image": "coding.png"},
-    {"alias": "update-1", "title": "Game 'Picture Puzzle remake' update 1.0", "image": "baobab.png"},
-    {"alias": "history", "title": "Picture Puzzle history", "image": "picture-puzzle.png"}
-]
-
-def fetch_latest_posts():
-    return posts
-
 @app.route("/")
 def index():
     latest_posts = Post.query.all()
@@ -66,9 +47,9 @@ def about():
 
 @app.route("/posts/<alias>")
 def post(alias):
-    post_info = next((p for p in posts if p['alias'] == alias), None)
+    post_info = Post.query.filter_by(alias=alias).first()
     if post_info:
-        return render_template(f"{alias}.html")
+        return render_template(f"{alias}.html", post_info=post_info)
     else:
         return "Post not found", 404
 
@@ -77,7 +58,8 @@ def login():
     if request.method == "POST":
         username = request.form["username"]
         password = request.form["password"]
-        if username in users and users[username] == password:
+        user = User.query.filter_by(username=username, password=password).first()
+        if user:
             session["username"] = username
             return redirect(url_for("index"))
     return render_template("auth/login.html")
@@ -91,12 +73,14 @@ def logout():
 def register():
     if request.method == "POST":
         username = request.form["username"]
+        email = request.form["email"]
         password = request.form["password"]
-        users[username] = password
+        new_user = User(username=username, email=email, password=password)
+        db.session.add(new_user)
+        db.session.commit()
         return redirect(url_for("login"))
     return render_template("auth/register.html")
 
 if __name__ == '__main__':
-    create_tables()
     register_admin_views()
     app.run(debug=True)
\ No newline at end of file
diff --git a/templates/auth/register.html b/templates/auth/register.html
index d450fe4..12aef3b 100644
--- a/templates/auth/register.html
+++ b/templates/auth/register.html
@@ -7,6 +7,8 @@
   <form method="post">
     <label for="username">Username</label></br>
     <input type="text" name="username" id="username" required></br>
+    <label for="email">Email</label></br>
+    <input type="text" name="email" id="email" required></br>
     <label for="password">Password</label></br>
     <input type="password" name="password" id="password" required></br>
     <label for="password">Confirm password</label></br>