bodom says:
I can play any chord without looking it up in a book or on the internet
It's great for reading any music transcription, and knowing you can figure out the structure of the chord somewhere else to get those other tones out...
Helps when you're trying to play,
G13(b9), Db9, C+7(#9), D7(#9, b5), Db13(#11), C+7(#9) within only 8 beats. I could be playing them anywhere, but because I messed around with the chord structure, I was able to play all of them within 3 or so frets.
Anyway, Skold, if you want some basic stuff, I've done some theory-like lessons, some on chords, some on intervals. Check them out and let me know what you think.
The Many Faces Of Intervals: An Interval Intro To Quality And Size
http://www.all-guitar-chords.com/lesson.php?id=27
The Structure Of Major And Minor Scales
http://www.all-guitar-chords.com/lesson.php?id=26
Chordal Structure: Building Triads By Intervals
http://www.all-guitar-chords.com/lesson.php?id=28
Stripped Chords: A Look At Dave Matthews Chords
http://www.all-guitar-chords.com/lesson.php?id=29