As a novice, I'm always looking for good instructional material but I find a lot of crap where they give you the first half of a lesson then they want you to sign up somewhere else for the rest of the lesson.
Clearly, anything with David Leadbetter is money, as long as you don't mind dry dialogue. I've improved a LOT by watching his vids and doing many of his drills. What else is worth watching? Any good suggestions?