个人感觉他写的比较详细整理如下
http://blog.youkuaiyun.com/ying422/article/details/45114141
Git简单教程(二)--GitHub for Windows
http://blog.youkuaiyun.com/ying422/article/details/45114217
Git简单教程(三)--Fork and Pull Requests
http://blog.youkuaiyun.com/ying422/article/details/45129959
http://blog.youkuaiyun.com/ying422/article/details/45131079