I'm extremely pleased to launch Run Your Own Social: How to run a small social network site for you friends.
This is a guide book to running a small, tight-knit federated social network server. It comes from my year of experience running Friend Camp. It's focused largely on SOCIAL solutions, though it does touch on the technical.
I've tried to keep it technology-neutral, and it should be a pretty easy read for anyone who's been on the fediverse for a while.