@FroehlichMarcel As in Network analysis? There is some good stuff in R that lets you get some hands on learning if thats what you meant.
HEre is a good start for doing NEtwork Analysis in R
https://kateto.net/networks-r-igraph
But for more base theory stuff, I dont have anything off hand.I've been out of school too long and past the primer stuff at this point.
Its such a broad field its hard to point you in any one direction. I guess my advice would be to learn from the perspective of specific problems and algorithms and work your way up.