Hi, Bob!

I recommend you start from the very first beginning which is Guitar Fundamentals 1. When I joined GT here, I had more or the less a similar knowledge as yours, but I figured I could use a refresher, and also I might be doing something wrong, or I have the wrong idea about a certain aspect. So I started from the beginning and I really am happy I did so. It was really beneficial for me, and reminded me of a lot of things. Plus, the instructors are amazing!

Rock on!