Carlos Escalante

http://www.mahalo.com/How_to_Play_Bass_Guitar_for_Newbies
http://www.chordie.com/chords.php
http://www.chordwizard.com/theory.html
http://www.chordbook.com/guitarchords.php
http://musicdials.com/theory.html
http://www.guitarlessonworld.com/lessons/index.htm
http://en.wikipedia.org/wiki/Properties_of_musical_modes
http://mugglinw.ipower.com/chordmaps/index.htm
http://www.fretjam.com/
http://www.songsterr.com/
http://virtualguitar.net/live/boot.php
http://www.matheasguitars.com.au/electric/toKnow.htm
http://www.zentao.com/guitar/guitar-lessons.html
http://www.essentialguitar.com/
http://www.theguitarfiles.com/guitarfile97.html
http://www.musiciansfriend.com/document?doc_id=91722
http://www.athensmusician.net/archive/2001-05-01_geneimbody1.shtml
http://ericmakesmusic.wordpress.com/2008/02/05/guitar-tip-55-know-your-truss-rod/