I want to dive deeper into distributed, peer-to-peer networks. How to build one, what to look out for etc.

I think messaging, file sharing but also general-purpose ones. Most often its touted at "Blockchain", but I also want to read non-blockchain related work (papers, books etc.).

I digged deeper into libp2p and what it can do. But I would like a more academic, or text-book style introduction and concepts!