These are some of the things I've found and now own to help out in learning the way of weilding the mighty 7.
"7 string guitars: Chords, Arpeggios, scales, riffs, licks" by Andy Martin
http://www.amazon.com/exec/obidos/tg...books&n=507846
The best book because it has everything you need to get going. The chords list in invalueable and the book is cheap.
"7 string guitar chord book" by Chad Johnson
http://www.amazon.com/exec/obidos/tg...glance&s=books
Foucus a little more on chord theory and has 7 string guitar tab and mauscript paper. Another good value.
"Introducing 7 string guitar" by Dan Begelman
http://www.amazon.com/exec/obidos/tg...glance&s=books
Focus's more on styles and playable riffs in various genra's. Also has alternate tunings. I don't own this one yet, but I may just pick it up for the hell of it...
