Git
http://nvie.com/posts/a-successful-git-branching-model/
https://sandofsky.com/blog/git-workflow.html
http://yakiloo.com/getting-started-git-flow/
https://wiki.debian.org/PackagingWithGit
http://www.eyrie.org/~eagle/notes/debian/git.html
GitHub
http://code.tutsplus.com/articles/team-collaboration-with-github--net-29876