I just yesterday finished Christopher Schlegel's Guitar Fundamentals 2 (discontinued) and can say with confidence that it is a great way to learn music theory basics pertaining to chords, triads, and scales. Also a good starting point for learning scale forms, reading music and playing barre chords.

Like it's creator, the course is very methodical, consice, logical and thorough. In comparison the currently available GF 1 & 2 with Lisa and Anders (each of which I've completed twice) seem decidedly scattered and ridden with holes. Don't get me wrong, I think that they are excellent courses in their own rights, but you'll almost certainly get more out of them if you first do Chris's GF 2. It is an effective means of both jump starting new beginners and as a gap filler for more advanced players.

After finishing GF2 with Chris, I did another of his stellar tutorials: "CAGED for Rhythm Guitar" which is unflinchingly dedicated to getting people to play over the entire fretboard and wraps up by demonstrating how to play both full chords and simple triads from nut to bridge. I think it's a worthy investment of time and effort for all but the most advanced guitar players.

Kudos Chris!

Nicolai