When I first started to learn how to use NixOS, the Nix package manager, and how to work with the Nix language, I was overwhelmed. While it did not take me too long to (sort of) get into it, it was not the most pleasant experience. I would say that there is not really a single source of truth, like Arch Linux users have with the ArchWiki, where you can basically look up everything. Instead, the information is spread across many different sources, which can make it difficult for beginners to find out how to do what they want to do.
The "modern nix CLI", also known as "nix3 cli", is another thing that can cause confusion when you are just starting your nix journey. There are some commands that look almost exactly the same, such as nix shell compared to nix-shell or nix-build compa