I started playing with nix few months ago. Youtube videos from Vimjoyer helped a lot. On top of that Claude Code is very good at understanding/explaining/updating config.

Regarding features: so far for my home setup (few vms on proxmox) I only needed flakes. They age good at organizing multihost config.

But besides it it works smoothly. And I constantly have thought “wait, why we didn’t always do it this way?”