Checkmate With Knight and Bishop
I’d assume that there are good pointers on the chesstv section, and there are always lessons. But I will have to look into it more to give a better answer.
There is a good explanation in Chess Endings: Essential Knowledge by Yuri Averbakh. Also one in Capablanca's Chess Fundamentals which is public domain.
But it's not easy. I study this for practice with the pieces, not necessarily to complete it in a game especially with time control.
How do you deliver a checkmate with a knight and a bishop? Any good tutorials about it
It’s a difficult and rare checkmate, so you don’t see as many tutorials on how to do it, but I created this video a few years ago: https://youtu.be/UPDvEC4zl1o?si=p5EP0sZD4XVUMwUA
For entertainment, I also have this YT short of me doing the B+N checkmate drill on chesscom:
https://www.youtube.com/shorts/v_ox8Ea0aqE