I have found the nix discourse site helpful.

It does seem difficult to learn how to use it well. It could use some more books/people making better in depth educational tools. Might help learn just by having a more playful/open discussion about what you're doing, how you're using it, and how you want to use it.

Ideally it's not a distro that's exclusively used by people who are experienced, but that's how it's marketed currently.