I'm hoping there will be at least one person who can reccomend something good for me here. A lot of the music I listen to (Opeth, Dream Theater,Steve Vai, etc) is theory intensive, however I have basically zero knowledge of theory beyond some scales and modes and basics. I don't have time for lessons, so I really need a good book for teaching basic to advanced music theory. I asked this same question on the John Petrucci forum, and a couple posters, as well as JP himself, reccomend A Modern Method for the Guitar by William Leavitt(sp?), but anyways. Any help is appreciated, thanks.