1 - Skip Caro's Book of Tells and get Navarro's Read 'em and Reap instead.
I can't emphasise this one strongly enough - if you're going to spend money on a tells book, Navarro is a bajillion times better than Caro, especially if your main game is casino NLHE. The pictures are better, the explanations are better and the science is a lot
better. Plus it doesn't waste time crapping on about draw poker home games.
how many of the people who are recommending Caro have read both and are still
recommending it over Navarro?
2 - Familiarise yourself with all the rules of live poker
This post might be handy:
3 - For the most part, skip the tournaments and stick to cash games
Casino tournaments, especially ones with low buy ins, are notoroius for having terrible structures where the blinds go up super-fast.
If you find some where the opponents are seriously terrible or luck out and find one with a really good structure then by all means go for it. But for the most part, you'll be a lot better off (and spend a lot less time pulling your hair out) at the cash tables.