GitHub Copilot tutorial: How to build, test, review, and ship code faster (with real prompts)

GitHub Copilot has evolved from a simple autocomplete tool into a comprehensive AI coding assistant with new features like mission control and agent mode. The enhanced system can now understand entire codebases, run multi-step workflows, generate tests, review pull requests, and create draft code changes directly within VS Code and GitHub. With over 36 million developers joining GitHub this year and 80% using Copilot in their first week, AI-powered coding has become standard practice rather than experimental technology.