Other
Dr. Brian Blood: Music Theory and History Online
An exhaustive resource with everything concerning music theory. From ear training to music history, this site covers it all.
Other
Tone Savvy
You will find many free games that will help you develop your music theory knowledge. Learn rhythmic dictation, key signatures and intervals as well as several other topics concerning music theory.
Other
Music: Chords/tabs
This site offers the chord/tab instructions for playing a multitude of songs. The songs are listed on the first page. By clicking on the song, the chords will then be displayed in an easy-to-follow format.
Other
Music Theory First Aid for Struggling Students
This site provides music theory information on such topics as rhythm, intervals, scales, chords, etc. Also, there is a fine section which describes the basic concepts of form and structure.
San Diego State University
Chords, Chords, Chords!
The goal of this musical card game is to recognize one chord for guitar in two seperate notation styles.
Music Theory
Music theory.net
An online beginning music theory and ear training site. This site is for students to use at home to reinforce what they learn in class.