In this Express JS full course, I build a complete backend step-by-step and keep everything beginner-friendly, but still professional. I start from the absolute basics—what Express is, why it’s a minimal, fast, flexible Node.js framework, and how it helps you handle routing, middleware, request/response, and server-side logic efficiently. Then I set up the environment, create my first Express app, run it with Node, and automate restarts using nodemon so you don’t waste time restarting the server again and again. After that, I go deep into routing: simple routes, multiple routes like /about and /contact, dynamic routes using route params (like /user/:username), and query strings (like /search?keyword=express). I also show you how I organize code the way you’ll do it in real projects—controllers in a separate file, then moving routes into a router file and mounting it with app.use('/user', router). Finally, I cover core HTTP methods (GET, POST, PUT, DELETE) and explain when to use each one, plus how to handle JSON request bodies properly using express.json() (globally with app.use).