Tangential: I found the documentation for this at https://docs.ssh-mitm.at/ https://docs.ssh-mitm.at/ to be good since it went into the underlying concepts and

Tangential: I found the documentation for this at https://docs.ssh-mitm.at/ https://docs.ssh-mitm.at/ to be good since it went into the underlying concepts and working in some detail. As someone who uses ssh with key based authentication but hasn’t learned this at a deeper level — neither ssh nor the configuration (security, usability, etc.) — what are some good tutorials and sources to follow (I think text with diagrams and/or videos would be helpful)?