# Extra 扩展知识

这里包含了额外的扩展知识文档：

- [Extra 1: Git and GitHub](extra1/extra1-what-is-git-and-what-is-github.md)
- [Extra 2: What is API](extra2/extra2-what-is-api.md)
- [Extra 3: AI Capability Starter Handbook](extra3/extra3-ai-capability-starter-handbook.md)
- [Extra 5: What is RAG](extra5/extra5-what-is-rag-and-how-does-it-work-and-future.md)
- [Extra 6: Zeabur Deployment](extra6/extra6-zeabur-what-is-it-and-how-to-deploy-web-applications.md)
- [Extra 7: CLI AI Coding Tools](extra7/extra7-cli-ai-coding-tools-and-the-principles-of-test-driven-development.md)