Watching System Crafters’ “Craft your system with GNU Guix” playlist, one video a day (or so). And while I’m not planning moving away from Debian any time soon, it’s interesting, even if it takes a bit more time 
Too bad I don’t have another PC to play with it.
https://www.youtube.com/playlist?list=PLEoMzSkcN8oNxnj7jm5V2ZcGc52002pQU