I know that theres 7 notes in a progression I - VII. I know that a key signature defines the amount of sharps and/or flats. I know that the I chord is the tonic, and also defines the name of the key. I remember, just barely, something about a whole and half step pattern that applies to all keys and progressions. I know that the I and V chord are the resolving chords in a key. The other chords create dissonance. I IV and V is the most common progression in rock songs. I know the major scale, minor scale, pentatonic scale, and pentatonic blues scale patterns, but only when the I note is found on the low E string. I know that the I note is not always the tonal center although it usually is (I am assuming that this has something to do with modes which I havent even tried to understand as of yet.) I know that the VII can sound awesome or terrible. Most chords I and my band play are the Root and the 5th of that chord (power chords.) I know that a major scale and its relative minor contain the same notes exactly. I know how to modulate. I am familar with the circle of 5ths (but barely understanding.) I know how to read tabs. I understand time signatures, accidentals (I learned how to read music when I played saxophone but this was 10 years ago. I also learned on guitar but that was quickly forgotten.) Most things, other then basics in regard to theory, I have learned from research online; anything other then the basic techinques I have taught myself on guitar.