Music theory resources:
http://www.guitarchordsmagic.com/guitar-chord-finder.html
A tool to help learn and identify chord shapes.
http://www.myguitarsolo.com/scales.htm
Scale fingering patterns.
http://www.harpinanawhinin.com/IMAGES/circle_of_fifths_and_color_wheel.jpg
An image of the circle of fifths.
http://www.metronomeonline.com/
An online metronome and tuning pitch pipe.
Free sheet music:
http://www.classtab.org/
Classical guitar tablature.
Music production:
http://musescore.org/en/screen-shots
Free music notation software.
