[JerrySfromNC]

Absolutely! I knew almost nothing about theory before starting TAC even though I had played guitar from tab and chords for years. I have done the Fretboard Wizard a couple times and now I know the basic stuff which has helped me immensely! And once it sunk in a bit, I even started playing some piano. I find that the theory is very visible on the piano, so I like doing it to reinforce the concepts that I learn on the guitar.