diff --git a/backend/api.js b/backend/api.js
deleted file mode 100644
index 5ea914e..0000000
--- a/backend/api.js
+++ /dev/null
@@ -1,143 +0,0 @@
-/*
-**  This code is part of Blink
-**  licensed under GPLv3
-*/
-
-// require() always returns a function
-const express = require('express');
-const bcrypt = require('bcrypt');
-const { Pool } = require('pg');
-const crypto = require('crypto');
-
-// We can do express() because the express
-// module exports a function. Exporting a function
-// means making a JavaScript function defined in one
-// module available for use in another module.
-const app = express();
-const port = 3000;
-
-// Middleware which parses JSON for POST requests
-app.use(express.json());
-
-const pool = new Pool({
-  user: 'postgres',
-  host: 'localhost',
-  database: 'Blink',
-  password: 'postgres',
-  port: 5432,
-  max: 10, 
-  idleTimeoutMillis: 30000,
-});
-
-// Define a route to get all items
-app.get('/api/items', (req, res) => {
-  res.json(items);
-});
-
-// POST - Register an account
-
-// (req, res) => { ... } is a callback which usually indicates that the
-// execution of the code contained between brackets will continue
-// asynchronously.
-app.post('/api/register', (req, res) => {
-  const userData = req.body;
-  
-  // Ensure that the required fields are present before proceeding
-  if (!userData.display_name || !userData.email || !userData.password) {
-    return res.status(400).json("Invalid request");
-  }
-
-  // The callback denoted by the arrow function is executed
-  // when hash() has finished its execution.
-  bcrypt.hash(userData.password, 10, (err, hashedPassword) => {
-    
-    if (err) {
-      console.error('Error hashing password:', err);
-    }
-
-    else {
-
-      // Generate activation link token
-      const activationLink = crypto.randomBytes(16).toString('hex');
-
-      // Acquire a connection from the pool
-      pool.connect()
-      .then((client) => {
-        // SQL query with placeholders for parameters
-        const insertQuery = `
-        INSERT INTO "User" (display_name, date_of_birth, place_of_living, is_looking_for_job, email, password)
-        VALUES ($1, $2, $3, $4, $5, $6)
-        RETURNING *`; // Return the inserted row
-
-      return client.query(insertQuery, [
-        userData.display_name,
-        userData.date_of_birth,
-        userData.place_of_living,
-        userData.is_looking_for_job,
-        userData.email,
-        hashedPassword
-      ])
-      .then((result) => {
-        // Respond with the inserted user data
-        res.status(200).json(result.rows[0]);
-      })
-      .catch((error) => {
-        console.error('Error inserting data:', error);
-        res.status(500).json("Internal server error");
-      })
-      .finally(() => {
-        // Release the connection back to the pool
-        client.release();
-      });
-    })
-    .catch((error) => {
-      console.error('Error acquiring a connection from the pool:', error);
-      res.status(500).json("Internal server error");
-    });
-    }
-
-  });
-});
-
-app.post('/api/registerv2', async (req, res) => {
-  const userData = req.body;
-  
-  // Ensure that the required fields are present before proceeding
-  if (!userData.display_name || !userData.email || !userData.password) {
-    return res.status(400).json("Invalid request");
-  }
-
-  const hashPasswordPromise = bcrypt.hash(userData.password, 10);
-  var client;
-  try{
-    client = await pool.connect();
-    const insertQuery = `
-      INSERT INTO "User" (display_name, date_of_birth, place_of_living, is_looking_for_job, email, password)
-      VALUES ($1, $2, $3, $4, $5, $6)
-      RETURNING *`;
-    const result = await client.query(insertQuery, [
-      userData.display_name,
-      userData.date_of_birth,
-      userData.place_of_living,
-      userData.is_looking_for_job,
-      userData.email,
-      await hashPasswordPromise
-    ]);
-    res.status(200).json(result.rows[0]);
-  }
-  catch (error){
-    console.error('Error inserting data:', error);
-    res.status(500).json("Internal server error");
-  }
-  finally {
-    if (client) {
-      client.release();
-    }
-  }
-});
-
-
-// Start the server
-app.listen(port, () => {
-  console.log(`Blink API server is running on port ${port}`);
-});
\ No newline at end of file
diff --git a/backend/apis/nodejs/api.js b/backend/apis/nodejs/api.js
new file mode 100644
index 0000000..9f4abff
--- /dev/null
+++ b/backend/apis/nodejs/api.js
@@ -0,0 +1,26 @@
+/*
+**  This code is part of Blink
+**  licensed under GPLv3
+*/
+
+// require() always returns a function
+const express = require('express');
+const api_controller = require('./api_controller.js');
+
+// We can do express() because the express
+// module exports a function. Exporting a function
+// means making a JavaScript function defined in one
+// module available for use in another module.
+const app = express();
+const port = 3000;
+
+// Middleware which parses JSON for POST requests
+app.use(express.json());
+
+app.post('/blinkapi/register', api_controller.register_async);
+app.post('blinkapi/login', api_controller.login);
+
+// Start the server
+app.listen(port, () => {
+  console.log(`Blink API server is running on port ${port}`);
+});
\ No newline at end of file
diff --git a/backend/apis/nodejs/api_controller.js b/backend/apis/nodejs/api_controller.js
new file mode 100644
index 0000000..a96005a
--- /dev/null
+++ b/backend/apis/nodejs/api_controller.js
@@ -0,0 +1,121 @@
+const bcrypt = require('bcrypt');
+const { Pool } = require('pg');
+const crypto = require('crypto');
+
+const pool = new Pool({
+    user: 'postgres',
+    host: 'localhost',
+    database: 'Blink',
+    password: 'postgres',
+    port: 5432,
+    max: 10, 
+    idleTimeoutMillis: 30000,
+});
+
+function register(req, res){
+    const userData = req.body;
+  
+    // Ensure that the required fields are present before proceeding
+    if (!userData.display_name || !userData.email || !userData.password) {
+      return res.status(400).json("Invalid request");
+    }
+  
+    // The callback denoted by the arrow function is executed
+    // when hash() has finished its execution.
+    bcrypt.hash(userData.password, 10, (err, hashedPassword) => {
+      
+      if (err) {
+        console.error('Error hashing password:', err);
+      }
+  
+      else {
+  
+        // Generate activation link token
+        const activationLink = crypto.randomBytes(16).toString('hex');
+  
+        // Acquire a connection from the pool
+        pool.connect()
+        .then((client) => {
+          // SQL query with placeholders for parameters
+          const insertQuery = `
+          INSERT INTO "User" (display_name, date_of_birth, place_of_living, is_looking_for_job, email, password)
+          VALUES ($1, $2, $3, $4, $5, $6)
+          RETURNING *`; // Return the inserted row
+  
+        return client.query(insertQuery, [
+          userData.display_name,
+          userData.date_of_birth,
+          userData.place_of_living,
+          userData.is_looking_for_job,
+          userData.email,
+          hashedPassword
+        ])
+        .then((result) => {
+          // Respond with the inserted user data
+          res.status(200).json(result.rows[0]);
+        })
+        .catch((error) => {
+          console.error('Error inserting data:', error);
+          res.status(500).json("Internal server error");
+        })
+        .finally(() => {
+          // Release the connection back to the pool
+          client.release();
+        });
+      })
+      .catch((error) => {
+        console.error('Error acquiring a connection from the pool:', error);
+        res.status(500).json("Internal server error");
+      });
+      }
+    });
+}
+
+async function register_async(req, res){
+    const userData = req.body;
+  
+    // Ensure that the required fields are present before proceeding
+    if (!userData.display_name || !userData.email || !userData.password) {
+      return res.status(400).json("Invalid request");
+    }
+
+    // Generate activation link token
+    const activationLink = crypto.randomBytes(16).toString('hex');
+
+    const hashPasswordPromise = bcrypt.hash(userData.password, 10);
+    var client;
+    try{
+      client = await pool.connect();
+      const insertQuery = `
+        INSERT INTO "User" (display_name, date_of_birth, place_of_living, is_looking_for_job, email, password)
+        VALUES ($1, $2, $3, $4, $5, $6)
+        RETURNING *`;
+      const result = await client.query(insertQuery, [
+        userData.display_name,
+        userData.date_of_birth,
+        userData.place_of_living,
+        userData.is_looking_for_job,
+        userData.email,
+        await hashPasswordPromise
+      ]);
+      res.status(200).json(result.rows[0]);
+    }
+    catch (error){
+      console.error('Error inserting data:', error);
+      res.status(500).json("Internal server error");
+    }
+    finally {
+      if (client) {
+        client.release();
+      }
+    }
+}
+
+function login(req, res){
+
+}
+
+module.exports = {
+    register_async,
+    login
+};
\ No newline at end of file
diff --git a/demoimages/blink_banner.jpg b/demoimages/blink_banner.jpg
deleted file mode 100644
index 355d963..0000000
Binary files a/demoimages/blink_banner.jpg and /dev/null differ
diff --git a/frontend/http/css/login.css b/frontend/html/css/login.css
similarity index 90%
rename from frontend/http/css/login.css
rename to frontend/html/css/login.css
index 335c38e..7cce9d5 100644
--- a/frontend/http/css/login.css
+++ b/frontend/html/css/login.css
@@ -59,6 +59,7 @@ input {
 }
 
 input[type="text"],
+input[type="password"],
 input[type="email"] {
   width: 100%;
   padding: 0 0 0 10px;
@@ -75,26 +76,31 @@ input[type="email"] {
   background: none;
 }
 input[type="text"]:focus,
+input[type="password"]:focus,
 input[type="email"]:focus {
   border-color: #3ca9e2;
 }
 input[type="text"]:focus:invalid,
+input[type="password"]:focus:invalid,
 input[type="email"]:focus:invalid {
   color: #cc1e2b;
   border-color: #cc1e2b;
 }
 input[type="text"]:valid ~ .validation,
+input[type="password"]:valid ~ .validation,
 input[type="email"]:valid ~ .validation {
   display: block;
   border-color: #0C0;
 }
 input[type="text"]:valid ~ .validation span,
+input[type="password"]:valid ~ .validation span,
 input[type="email"]:valid ~ .validation span {
   background: #0C0;
   position: absolute;
   border-radius: 6px;
 }
 input[type="text"]:valid ~ .validation span:first-child,
+input[type="password"]:valid ~ .validation span:first-child,
 input[type="email"]:valid ~ .validation span:first-child {
   top: 30px;
   left: 14px;
@@ -104,6 +110,7 @@ input[type="email"]:valid ~ .validation span:first-child {
           transform: rotate(-45deg);
 }
 input[type="text"]:valid ~ .validation span:last-child,
+input[type="password"]:valid ~ .validation span:last-child,
 input[type="email"]:valid ~ .validation span:last-child {
   top: 35px;
   left: 8px;
diff --git a/frontend/http/html/login.html b/frontend/html/html/login.html
similarity index 67%
rename from frontend/http/html/login.html
rename to frontend/html/html/login.html
index 97acb41..2af5964 100644
--- a/frontend/http/html/login.html
+++ b/frontend/html/html/login.html
@@ -11,13 +11,16 @@
 <!-- partial:index.partial.html -->
 <div id="login-form-wrap">
   <h2>Login</h2>
-  <form id="login-form">
+  <form id="login-form" method="POST">
+
     <p>
-    <input type="text" id="username" name="username" placeholder="Username" required><i class="validation"><span></span><span></span></i>
+      <input type="email" id="email" name="email" placeholder="Email Address" required><i class="validation"><span></span><span></span></i>
     </p>
+
     <p>
-    <input type="email" id="email" name="email" placeholder="Email Address" required><i class="validation"><span></span><span></span></i>
+    <input type="password" id="password" name="password" placeholder="Password" required><i class="validation"><span></span><span></span></i>
     </p>
+
     <p>
     <input type="submit" id="login" value="Login">
     </p>
diff --git a/backend/tutorials/0_callbacks.js b/tutorials/0_callbacks.js
similarity index 92%
rename from backend/tutorials/0_callbacks.js
rename to tutorials/0_callbacks.js
index bab79b5..f57d5ed 100644
--- a/backend/tutorials/0_callbacks.js
+++ b/tutorials/0_callbacks.js
@@ -41,4 +41,8 @@ function entryPoint(){
     /* ===== End Simple Callback ===== */
 }
 
-entryPoint();
\ No newline at end of file
+entryPoint();
+
+// callbacks usually indicate that the
+// execution of their code will continue
+// asynchronously.
\ No newline at end of file
diff --git a/backend/tutorials/1_promises.js b/tutorials/1_promises.js
similarity index 100%
rename from backend/tutorials/1_promises.js
rename to tutorials/1_promises.js
diff --git a/backend/tutorials/2_promise_chaining.js b/tutorials/2_promise_chaining.js
similarity index 100%
rename from backend/tutorials/2_promise_chaining.js
rename to tutorials/2_promise_chaining.js
diff --git a/backend/tutorials/3_async-await.js b/tutorials/3_async-await.js
similarity index 100%
rename from backend/tutorials/3_async-await.js
rename to tutorials/3_async-await.js
diff --git a/backend/tutorials/delay.js b/tutorials/delay.js
similarity index 100%
rename from backend/tutorials/delay.js
rename to tutorials/delay.js
diff --git a/backend/tutorials/sincrono_vs_asincrono.txt b/tutorials/sincrono_vs_asincrono.txt
similarity index 100%
rename from backend/tutorials/sincrono_vs_asincrono.txt
rename to tutorials/sincrono_vs_asincrono.txt