git

https://git-scm.com

Git is a free and open source distributed version control system designed to handle everything from small to very large projects with speed and efficiency.
Git 是一个免费的开源分布式版本控制系统，旨在快速高效地处理从小型到大型项目的所有内容。

Git is easy to learn and has a tiny footprint with lightning fast performance. It outclasses SCM tools like Subversion, CVS, Perforce, and ClearCase with features like cheap local branching, convenient staging areas, and multiple workflows.
Git 易于学习，占地面积小，具有闪电般的快速性能。它具有廉价的本地分支，方便的暂存区域和多个工作流等功能，其性能优于 Subversion、CVS、Perforce and ClearCase 等 SCM 工具。

outclass [ˌaʊtˈklɑːs]：vt. 远高于，远胜于
footprint [ˈfʊtprɪnt]：n. 足迹，脚印

1. Book

Pro Git 2nd Edition - English
https://git-scm.com/book/en/v2

Pro Git 2nd Edition - 简体中文
https://git-scm.com/book/zh/v2

精通 Git 第 2 版
https://www.ituring.com.cn/book/1608

2. About

https://git-scm.com/about

3. Documentation - Reference

https://git-scm.com/docs

4. Documentation - Videos

https://git-scm.com/videos

5. Documentation - External Links

https://git-scm.com/doc/ext

6. Downloads

https://git-scm.com/downloads