Chord Builder, Scale Builder
http://www.looknohands.com/chordhouse/

Great Guitar Site and Tuner http://www.chordbook.com

Online Music Store http://www.musiciansfriend.com

Guitar Tabs http://www.tabcrawler.com 

Chord Dictionary http://www.guitarnotes.com/guitar/notes2/ultimate11.shtml

Lyrics Index http://crydee.sai.msu.ru/public/lyrics/cs-uwp

Rock N Roll Hall of Fame  http://www.rockhall.com

Guitar Art  http://guitar-art.net

Chord Charts (Ukulele,Mandolin,Piano,Guitar,Tab-Creator http://www.Gootar.com

 Excellent online Guitar lessons http://www.freeguitarvideos.com