Rock Discipline isn't really about theory, but rather about how to increase your velocity on the instrument. (Just like GAMBALE wrote 'the guitar workout')
I personally use "la partition interieure" ('the inside score'), it's a 1200 pages book and it has everything in it. I paid it around a 100 bucks, but it was the last theory book I have bought (it was 4 years ago, and I'm a music teacher) Everytime I see something that I'm not quite fluent in, I just go and check it out in there...