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Introduction

This interactive book will take you from a Go developer who knows the basics to someone who truly understands the language’s design decisions, patterns, and best practices.

This book assumes you already know:

  • Basic Go syntax (variables, functions, structs)
  • How to write and run simple Go programs
  • Basic control flow (if, for, switch)
  • How to import and use packages

If you’re completely new to Go, we recommend starting with the official Tour of Go first.

Master interfaces, error handling patterns, and understand how Go manages memory.

Go’s killer feature - learn goroutines, channels, and concurrent design patterns.

Build maintainable applications with clean architecture and proper dependency management.

Write effective tests, benchmark your code, and profile for performance.

Learn the patterns that make Go code feel “right” and avoid common gotchas.

Each chapter includes:

  • Concepts - Clear explanations with runnable code examples
  • Playground - Edit and run code directly in your browser
  • Exercises - Practice what you’ve learned with immediate feedback
  • Key Takeaways - Summary of the most important points

Your progress is saved automatically in your browser. You can export it to continue on another device.

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Ready to begin? Start with Chapter 1: Interfaces & Type System.