The Arch Wiki is a bit of a mix. Part documentation, part how-to guide, but it's still one of the best references to understand how stuff works (and how to use

The Arch Wiki is a bit of a mix. Part documentation, part how-to guide, but it's still one of the best references to understand how stuff works (and how to use it) in *nix in general. I do agree though, that OpenBSD has by far the best documentation out there.