Welcome to Node.js in Practice

You've been using Node.js every day. npm install, npx, maybe a dev server. But do you actually know what's happening underneath?

This course gives you the practical knowledge you need, nothing more.

What You'll Learn

• How Node.js Works: V8, the event loop, and why it matters
• Modules: CommonJS vs ESM, require vs import, creating your own
• npm: package.json, scripts, lockfiles, versioning, npx
• File System: Reading, writing, paths, and directory operations
• Process & Environment: env vars, arguments, exit codes
• HTTP: Building a server from scratch with zero frameworks
• Streams: Reading and writing data efficiently

Why This Course?

• Practical only — no history lessons, no theory dumps
• What you actually use — focused on daily developer tasks
• Framework-agnostic — understand Node itself, not Express or Fastify
• Short and direct — each lesson teaches one thing well

Prerequisites

Basic JavaScript knowledge. If you've written functions, used arrays, and understand callbacks, you're ready.

Course Structure

Eight lessons covering Node.js from runtime basics to building a real CLI tool. Each lesson includes practical examples and quizzes. Ready to understand what's actually running your code? Choose your first lesson from the sidebar!