I had no formal training in hosting when I started. What got me started was, dating myself, blockbuster going out of business and getting over 1000 dvds over the course of their downfall and wanting a better way to watch a movie than going thru a big binder. Found Plex eventually, then built a server from an old workstation and a couple hdds. Then docker and automation, that did get me in the door for my current kubernetes job, now I’m starting to get kubernetes setup at home with 3 mini PCs.