I haven't seen anything specific, taught by a instructor that wasn't in countless instructional books and articles. I'm talking fundamentals here. The great thing about instruction is that at least initially fundamentals are stressed during the lesson. If a student put up the cash for the lesson, he is probably going to spend time back with the fundamentals. We all know many players that will buy some instructional book, but skip over the section on fundamentals and move straight to the drills. This player's game will most probably continue to suffer or so minimal improvement, unless they are a true natural talent, which few are. They will continue wandering through the wilderness.