If you cannot yet play the guitar, then the obvious place to start is the beginners section. Music theory does not make you a guitarist, as you know ;)

Because these lessons are all self-paced, you can go through them as fast as you feel you want. No need to hang about.

If I felt I had moved on to the advanced stage, I'd start at the advanced level and see how I go. If it is too hard in places, I'd go back one step into intermediate, identify the areas that address my weaknesses, fix these and move on.

If all the advanced stuff is too easy because you are already a hot guitarist, then, wonderful! Become a teacher! :)