http://www.acousticguitarworkshop.com/index.htm British fingerstyle blues guitarist Rick Payne offers instruction in acoustic blues guitar. http://www.celticguitarmusic.com/books.htm Three volumes of arrangemets of Celtic dance tunes, slow airs, and the harp tunes of Turlough O' Carolan. http://www.chordmelody.com Free chord harmony report. Guitar sheet music and tab books, videos and instructional guitar music in all styles: Jazz, classical, rock, blues, country, etc. http://www.melbay.com/ Publishes a wide catalog of sheet music for all instruments and styles.