Free/Open Source/Creative Commons Textbooks about Git, GitHub, and BitBucket, as well as Visual GitHub Clients and a list of Chrome Extensions
- Conversational Git (ePub)
- Conversational Git (mobi)
- GIT Succinctly (pdf)
- Git In The Trenches (ePub)
- Git In The Trenches (pdf)
- Git Internals (pdf)
- Git Magic (pdf)
- Pro Git (pdf)
- Version Control by Example (pdf)
- Git Cheat Sheet (image)