Node.js Overview & Environment Setup
What Node.js is, the V8 engine and Libuv, CommonJS vs ESM, nvm version management, npm and package.json, and writing your first server.
Node.js Tutorial
JavaScript on the server: event loop driven, huge npm registry, ideal for APIs.
All 4 tutorials
Node.js Event Loop, Async Patterns & Streams
The event loop phases, timers and microtasks, promises and async/await, callback -> promise -> async evolution, backpressure with streams, and avoiding event loop blocking.
Building REST APIs with Express
Express setup, routing and route params, middleware chain, JSON body parsing and validation, error handling, and project structure for maintainable APIs.
NestJS: Enterprise-grade Node Framework
NestJS architecture with modules, controllers and providers, dependency injection, DTO validation with class-validator, exception filters, and when to choose it over Express.