• What is Node.js?
• Benefits and use cases
• Understanding the event-driven model

• Installing Node.js and npm
• Setting up IDEs (e.g., VS Code)
• Understanding Node.js directory structure

• What is npm?
• Installing and managing packages
• Creating and managing a package.json file

• Writing a simple “Hello World” app
• Understanding how to run Node.js applications
• Introduction to the REPL (Read-Eval-Print Loop)

• Overview of the V8 engine
• Understanding the event loop and how it works
• Single-threaded vs. multi-threaded

Day 6: Exploring Built-in Modules

• Introduction to core modules (fs, http, path, etc.)
• Using the ‘fs’ module to read/write files
• Setting up a basic web server with the ‘http’ module

Day 7: Understanding Callbacks

• What are callbacks?
• Callback hell and how to manage it
• Practice with callback functions

Day 8: Introduction to Promises

• Understanding Promises and their states
• Converting callback-based code to Promise-based code
• Handling errors in Promises

Day 9: Async/Await

• Introduction to async functions
• Using await to handle asynchronous code
• Combining async/await with error handling

Day 10: Event-driven Architecture

• Understanding events and the EventEmitter class
• Creating custom events
• Practical examples of using EventEmitter

Day 11: Introduction to Express.js

• What is Express.js?
• Setting up an Express server
• Understanding middleware in Express

Day 12: Routing in Express

• Creating routes and handling different HTTP methods
• Dynamic routes and route parameters
• Error handling in routes

Day 13: Handling Requests and Responses

• Understanding request and response objects
• Sending different types of responses (JSON, HTML, etc.)
• Parsing request bodies using middleware (body-parser)

Day 14: Serving Static Files

• Serving static assets (CSS, JS, images)
• Using the ‘express.static’ middleware
• Directory structure for serving static files

Day 15: Building RESTful APIs

• Introduction to REST principles
• Designing a simple RESTful API
• Implementing CRUD operations

Day 16: Connecting to a Database

• Introduction to MongoDB and Mongoose
• Setting up a MongoDB database
• Connecting Node.js with MongoDB using Mongoose

Day 17: Performing CRUD Operations with Mongoose

• Creating a Mongoose model
• Implementing Create, Read, Update, Delete operations
• Validating data with Mongoose schemas

Day 18: Error Handling and Debugging

• Understanding common errors in Node.js
• Best practices for error handling
• Using debugging tools (Node Inspector, console logs)

Day 19: Introduction to Testing

• Importance of testing in Node.js applications
• Setting up a testing environment (Mocha and Chai)
• Writing and running unit tests

Day 20: Best Practices and Performance Optimization

• Code organization and modularization
• Caching strategies and optimizing performance
• Security best practices for Node.js applications