3 links
Bluesblast
bluesblast.com
A collection of guitar practice tracks for rock, blues and jazz guitarists to jam along to; offers MIDI and MP3 files.
Bossa Nova Guitar
bossanovaguitar.com
Offers a history of Bossa Nova, with a library of lyrics and chords, mp3 samples, and a directory of Brazilian music.
Guitar DownUnder
guitardownunder.com
Free classical and fingerstyle guitar music in html and pdf. Info on left and right hand techniques, nail care and tuning.