Not really. I had to make my own NixOS for dummies cheat sheet because the documentation confused the hell out of me. After playing around for a while, it turns out to be pretty logical. Keep in mind, I don't do anything very sophisticated. I learned the hard way to not mess with the configuration file much beyond your basic setup. I had to reinstall fresh more than once. Now I use home manager for messing around, and it's simpler to correct screwups. I really like how you can revert to prior configurations too. It's kind of idiot proof.