I have lots I can recommend, but what are you most interested in learning about? Do you have any prior understanding of blockchain protocols? For example, I can link to interesting papers and documentation on Bitcoin, Monero, etc.
When did they add monero validation? Last time I used it all non btc transactions were using a human arbitrator.
Yea, I generally understand how Bitcoin works. More interested in learning about anonymous cross-chain swaps using multisig escrow.