Regarding your questions, they seem to be about NixOS, which is a Linux distro that is centered around Nix. I usually recommend this guide for newcomers to Nix

Regarding your questions, they seem to be about NixOS, which is a Linux distro that is centered around Nix. I usually recommend this guide for newcomers to Nix: https://zero-to-nix.com/ https://zero-to-nix.com/ I don’t think there’s a beginner-friendly guide to NixOS. I personally learned it (and continue to!) through a number of blog posts and examples on Github. The NixOS manual is a key reference to rely on, but not really a tutorial: https://nixos.org/manual/nixos/stable/ https://nixos.org/manual/nixos/stable/