Guitar Action Online Information for those getting started with playing both the electric and Acoustic guitar. http://guitaraction.org/

Chord Melody Guitar Music
Enormous, unique selection of guitar sheet music, tab books with CDs, instructional videos and DVDs for all styles of guitar.
http://www.chordmelody.com

Rockin Tabs
A growing collection of rock guitar tabs, from a wide variety of artists.
http://www.rockintabs.com/

Tab Gallery
One of the largest collections of guitar tabs on the internet, from every genre of music.
http://www.tabgallery.com/

Tab Wiki
The internet's first tab wiki site, which allows anyone to add or edit tabs at anytime, resulting in the most accurate tab database around.
http://www.tabwiki.com/