I recommend guitarprinciples.com if you are experiencing any pain associated with playing the guitar -- the only detailed information missing on GT. Yeah, teachers cover a little of this and a little of that regarding pain. But, Jamie Andreas on GP has dealing with pain locked down. Jamie teaches how to hold the guitar correctly in relation to the body in minute detail to avoid pain and injury. Otherwise, GT has the rest locked down. ...(thinking out loud), if I were GT, I'd get Jamie Andreas on-board! Yeah, Jamie teaches songs too, but nothing to the extent of GT. GT and GP should join forces, for sure. GT wit' a little GP for ya -- the ultimate guitar lesson site!