Guitar Noise is a free guitar lesson website with hundreds of articles, tips and reviews for students of this versatile instrument. Whether you are a beginner, a lefty, a bass player or a singer, Guitar Noise has lessons on nearly everything and anything to do with the guitar. There are many talented musicians out there. The artist profiles section includes interviews with dozens. The forums, blog and podcasts help you keep up with this thriving community.
CountryBluesGuitarFilter: Keys to the Highway: Some Country Blues Resources --although Weenie Juke Radio is now dead and gone, Weenie Campbell lives on, with forums, guitar lessons and linkage galore. Keys To The Highway lists lyrics and guitar keys and tunings for some notable artists. And the one for the Mississippi Sheiks is a link to the fine country blues music blog Done Gone, which has on its front page list of links just about every prewar, country blues and related site worth linking. As does Weenie Campbell. And at WeenieCampbell there are also some audio lessons in mp3 from the great guitarist and guitar teacher John Miller, these days a resident of my fair city.
Learn to Play Guitar! Justin, of JustinGuitar.com (not the dork with the TV camera strapped to his head) offers over 100 free video guitar lessons for absolute noobs & guitar enthusiasts, with lesson categories & written instrx as well. For people who want tablature to play along, the good people of Guitar Video Tabs provide full tab notation under videos hundreds of popular songs.
Free online music lessons from the Berklee College of Music, licensed under the Creative Commons and suitable for file sharing networks. Via Larry Lessig's weblog.
Truefire TrueFire is a self-publishing tool and open marketplace for authors and artists wishing to promote and distribute their original poetry, guitar lessons, novels, music, reference material, photography and artwork.
Net Music School Found a very cool site in Flash that provides online guitar and piano lessons over the 'net. They got a free lesson sections too.