I look back on learning to live with NixOS and laugh. It made my brain hurt, and if I'd only found the Misterio77 repo sooner, it would've saved a lot of premature aging. But, if you have some basic familiarity with programming concepts, it's an easy OS to live with, just different. And so, so, so, so powerful.
They do desperately need a set of opinionated example builds and much better documentation.