Probably alot of books can never be "finished"... But what books have you got through completely. Played everything in there, or studied it and generally "know it". (Or provide your own definition of "finished") me: only one, when I was taking formal classical guitar lessons for a while: Classic Guitar Studies by Aaron Shearer (The red book) I have set a goal to "finish" Ed Friedland's Bass Method (Complete Edition). I've started and stopped this many times. I'm starting back at the beginning and I'm going to patiently work my way to "finishing" it.