[goldmab]

If you want to learn to play guitar, the wrong approach is to pick up a book about music theory and a chart showing where all the notes are on the fretboard.

I found music theory knowledge very helpful when learning how to play guitar. In fact, if somebody knows what intervals a minor triad and a major triad are made of, and they know what note each string of the guitar is, then they can work out how to play a lot of chords.

[andrewflnr]

Did you already know an instrument?

[goldmab]

Yep. I learned music theory in the course of learning to play single-note woodwind instruments. There's a lot of focus on scales and intervals.