I always find it harder to look at actions from videos rather than in person. My main advice if you're just starting out is to work on spinning it as much as possible, as that's the hardest thing to learn. You can work on accuracy etc after that.
My main reason for posting was just to say that you won't get many LBWs if you play in matches, because when you bowl, you end up stood right in front of the Umpire, so he won't be able to see a thing!