re: Poker & SNG Study
drag the bar is good for beginning stuff. But that is all covered in moshmans book.
cardrunners has moshman videos on there, plus a number of other very good professionals. i cant vouch for quality but im sure its good.
bluefirepoker also has some good content, an ex coach of mine used to do videos there. also they have a guy called raizin_azian there, he has really good content and just has a really good thought process.
pokervt has really good content for icm calculations and sng wizard use they have some advanced stuff in there too.
thats about all i can help you with. i know a number of them do trial accounts, so you can test before you buy. Keep in mind sngs are not the hardest format to learn, but to make serious money you have to be seriously good, so study helps, but you also need to play a lot. i always tried to stick to a 50/50 playing study ratio when i started out, but once you have a solid grasp, you can lower it to something like 20/80 study/play ratio. Once you get a few thousand games under your belt, you can concentrate on just reviewing your play and training yourself to play many tables at once.