I learned a lot from peete steele of type o..chords, melody's, rakeing and that sort of thing.....A LOT of Metal players(myself included)apply Billy Sheehan's Tech's to there craft if you were intereseted in back tracking it..also Ross dolan of immolation..even though he double's most of the guitar..just playing in that rythm section is sick enough....also zach in cephalic carnage is quite fierce......