My current home server that runs three dozen containers including Plex and Emby as well as two dozen other services and many terabytes of data is literally an old Lenovo desktop I got for free out of somebody’s garage 14 years ago. So yeah it’s sort of a perfectly fine place to start.
No. It’s a term which means a services hosted by…yourself.
The author actually explains that his original solution was just saving them locally on his phone and playing them from there, but that was too much legwork for his wife to want to switch from a cloud service like Audible. So the whole self hosting part is to become “Audible” for his wife lol.
Revolt is also an annoyance to self host and the apps don’t support self hosted instances without you rebuilding them because the server is hardcoded.