Dwight Schuh has an older book but I always thought it was fantastic, it's the first thing I let new hunters borrow, it is called "Bugling elk". I have elknuts vids too, other good ones are Rocky Jacobsen's (Bugling Bull productions) as he is calling on public land in his vids generally. Primos are fun to watch but they are almost always animals on private ranches, so over realistic too how call friendly most animals are.
If you are a beginner learning "how to" the best thing to do is practice practice practice until you get good at it, then it's like riding a bike.
Calling in elk is the best thing I've ever done in hunting. An E ticket ride for sure!
Good Luck!