Swing Blues and Jump Blues Guitar  
   Jump Blues and Swing Blues Guitar is a complete and free instructional Jump Guitar method (interm/adv)
   http://www.swingblues.com/

ActiveBass: Blues Bass Lessons  
   Blues bass guitar lessons created by ActiveBass members with bass tab and customizable music playback. For beginners and intermediate level players.
   http://activebass.com/asp/lessons/blues.asp

Acoustic Guitar Workshop  
   Online lessons in the art of fingerstyle acoustic blues, plus acoustic guitar resources and free ezine.
   http://www.acousticguitarworkshop.com/

Acoustic Delta Blues: Crow Jane  
   Let Steve James teach you to play and sing the Delta blues classic ''Crow Jane''.
   http://www.acousticguitar.com/lessons/crowjane/crowjane1.shtml

Cyberfret: Blues Guitar 101  
   Free guitar lessons covering the basics of blues.
   http://cyberfret.com/styles/blues/101/index.htm

The Guitarists Network: Blues Lessons  
   Get some tips from blues experts. Topics include basic blues, blue note passing, turnarounds, licks, melody and scales.
   http://www.guitarists.net/lessons/index.cfm?s=2&lid=1

Stefan Grossman: Blues Guitar Lessons  
   Commercial site that offers lessons on audio tape for beginners to advanced players. Covers general blues guitar, bottleneck & slide guitar and guitar styles of famous blues masters.
   http://guitarvideos.com/audio/000blues.htm

Ultimate Guitar Archive: Blues Lessons  
   Beginners lessons covering theory and practice, provided by visitors of the archive.
   http://www.ultimate-guitar.com/lessons_cat.php3?cid=8&cat=Playing%20Blues

School of the Blues  
   Study center for blues teaching harmonica, guitar, bass, piano/keys/organ and vocals in San Jose, CA.
   http://www.schooloftheblues.com/events.html