Chord Theory
http://www.malletjazz.com/lessons/voicings.html
http://www.malletjazz.com/lessons/cho_symb_les.html
http://www.accessrock.com/BeginningLessons/guitarchordgrid.asp
http://home.comcast.net/~tbpmusic/id52.htm
http://edweb.sdsu.edu/courses/EDTEC670/Cardboard/Card/C/chords.html
http://www.jmdl.com/howard/music/guitar_faq.html
http://www.rockintabs.com/chords/
http://www.rockintabs.com/chord/172
http://www.fortunecity.com/tinpan/liceladder/52/tab.htm
http://www.cineramania.freeservers.com/custom4.html
http://store.yahoo.com/chrisbsmusicinc/chordtheory.html
Recorded Music Covers
http://www.secondhandsongs.com/song/28399.html
http://littleroom.whitestripes.net/index.php?showtopic=39826&hl=covers
http://littleroom.whitestripes.net/index.php?showtopic=32121&hl=covers