They are decent for reference, and some are genuinely great (like git-everyday [1] or git rebase [2]). But just as often as they are helpful they just leave me scratching my head, either because they are too deep in git-lingo or because they forget to clarify some crucial details

1: https://git-scm.com/docs/giteveryday

2: https://git-scm.com/docs/git-rebase