diff --git a/Lecture 3 - First Node Server/app.js b/Lecture 3 - First Node Server/app.js
new file mode 100644
index 0000000..16ca8f1
--- /dev/null
+++ b/Lecture 3 - First Node Server/app.js	
@@ -0,0 +1,10 @@
+const http = require('http');
+
+const server = http.createServer((req, res) => {
+  console.log(req);
+});
+
+const PORT = 3001;
+server.listen(PORT, () => {
+  console.log(`Server running on address http://localhost:${PORT}`);
+});
\ No newline at end of file
diff --git a/Lecture 4 - Request and Reponse/app.js b/Lecture 4 - Request and Reponse/app.js
new file mode 100644
index 0000000..fea7fd9
--- /dev/null
+++ b/Lecture 4 - Request and Reponse/app.js	
@@ -0,0 +1,32 @@
+const http = require('http');
+
+const server = http.createServer((req, res) => {
+  console.log(req.url, req.method, req.headers);
+
+  if (req.url === '/') {
+    res.setHeader('Content-Type', 'text/html');
+    res.write('<html>');
+    res.write('<head><title>Complete Coding</title></head>');
+    res.write('<body><h1>Welcome to Home</h1></body>');
+    res.write('</html>');
+    return res.end();
+  } else if (req.url === '/products') {
+    res.setHeader('Content-Type', 'text/html');
+    res.write('<html>');
+    res.write('<head><title>Complete Coding</title></head>');
+    res.write('<body><h1>Checkout our products</h1></body>');
+    res.write('</html>');
+    return res.end();
+  }
+  res.setHeader('Content-Type', 'text/html');
+  res.write('<html>');
+  res.write('<head><title>Complete Coding</title></head>');
+  res.write('<body><h1>Like / Share / Subscribe</h1></body>');
+  res.write('</html>');
+  res.end();
+});
+
+const PORT = 3001;
+server.listen(PORT, () => {
+  console.log(`Server running on address http://localhost:${PORT}`);
+});
\ No newline at end of file
diff --git a/Lecture 4 - Request and Reponse/practise.js b/Lecture 4 - Request and Reponse/practise.js
new file mode 100644
index 0000000..bc1eefb
--- /dev/null
+++ b/Lecture 4 - Request and Reponse/practise.js	
@@ -0,0 +1,48 @@
+const http = require('http');
+
+const server = http.createServer((req, res) => {
+  console.log(req.url, req.method);
+  if (req.url === '/home') {
+    res.write('<h1>Welcome to Home</h1>');
+    return res.end();
+  } else if (req.url === '/men') {
+    res.write('<h1>Welcome to Men</h1>');
+    return res.end();
+  } else if (req.url === '/women') {
+    res.write('<h1>Welcome to Women</h1>');
+    return res.end();
+  } else if (req.url === '/kids') {
+    res.write('<h1>Welcome to Kids</h1>');
+    return res.end();
+  } else if (req.url === '/cart') {
+    res.write('<h1>Welcome to Cart</h1>');
+    return res.end();
+  }
+
+
+  res.write(`
+<html lang="en">
+<head>
+  <title>Myntra</title>
+</head>
+<body>
+  <head>
+    <nav>
+      <ul>
+        <li><a href="/home">Home</a></li>
+        <li><a href="/men">Men</a></li>
+        <li><a href="/women">Women</a></li>
+        <li><a href="/kids">Kids</a></li>
+        <li><a href="/cart">Cart</a></li>
+      </ul>
+    </nav>
+  </head>
+</body>
+</html>
+  `);
+  res.end();
+});
+
+server.listen(3001, () => {
+  console.log('Server running on address http://localhost:3001');
+});
\ No newline at end of file
diff --git a/Lecture 4 - Request and Reponse/temp.html b/Lecture 4 - Request and Reponse/temp.html
new file mode 100644
index 0000000..0de4efe
--- /dev/null
+++ b/Lecture 4 - Request and Reponse/temp.html	
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <title>Myntra</title>
+</head>
+<body>
+  <head>
+    <nav>
+      <ul>
+        <li><a href="/home">Home</a></li>
+        <li><a href="/men">Men</a></li>
+        <li><a href="/women">Women</a></li>
+        <li><a href="/kids">Kids</a></li>
+        <li><a href="/cart">🛒</a></li>
+      </ul>
+    </nav>
+  </head>
+</body>
+</html>
\ No newline at end of file
diff --git a/Lecture 4 - Request and Reponse/user.js b/Lecture 4 - Request and Reponse/user.js
new file mode 100644
index 0000000..0fa2af1
--- /dev/null
+++ b/Lecture 4 - Request and Reponse/user.js	
@@ -0,0 +1,42 @@
+const http = require('http');
+const fs = require('fs');
+
+const server = http.createServer((req, res) => {
+  console.log(req.url, req.method, req.headers);
+
+  if (req.url === '/') {
+    res.setHeader('Content-Type', 'text/html');
+    res.write('<html>');
+    res.write('<head><title>Complete Coding</title></head>');
+    res.write('<body><h1>Enter Your Details:</h1>');
+    res.write('<form method="POST" action="submit-details">');
+    res.write('<input type="text" name="username" placeholder="Enter your name"><br>');
+    res.write('<input type="radio" name="gender" id="male" value="male" />');
+    res.write('<label for="male">Male</label>')
+    res.write('<input type="radio" name="gender" id="female" value="female" />');
+    res.write('<label for="female">Female</label>');
+    res.write('<br><button type="submit">Submit</button>');
+    res.write('</form>');
+    res.write('</body>');
+    res.write('</html>');
+    return res.end();
+  
+  } else if (req.url === '/submit-details' &&
+             req.method === 'POST') {
+    fs.writeFileSync('user.txt', 'Prashant Jain');
+    res.statusCode = 302;
+    res.setHeader('Location', '/');
+    return res.end();
+  }
+  res.setHeader('Content-Type', 'text/html');
+  res.write('<html>');
+  res.write('<head><title>Complete Coding</title></head>');
+  res.write('<body><h1>Like / Share / Subscribe</h1></body>');
+  res.write('</html>');
+  res.end();
+});
+
+const PORT = 3001;
+server.listen(PORT, () => {
+  console.log(`Server running on address http://localhost:${PORT}`);
+});
\ No newline at end of file
diff --git a/Lecture 4 - Request and Reponse/user.txt b/Lecture 4 - Request and Reponse/user.txt
new file mode 100644
index 0000000..eae7489
--- /dev/null
+++ b/Lecture 4 - Request and Reponse/user.txt	
@@ -0,0 +1 @@
+Prashant Jain
\ No newline at end of file
