I recommend that you pick up a copy of "Championship No-Limit & Pot-Limit Hold 'Em" by Tom McEvoy & T.J. Cloutier. Tom is a prolific poker writer and WSOP
bracelet winner and T.J. is the winningest tournament player in poker history. This is an easy-to-read guide with some great anecdotes thrown in. It doesn't bog itself down in the analytical/numbers side of the game like a lot of the advanced books do.
Quick answer to the Strategy question. There are two primary schools of thought:
1.) Take advantage of the low blinds in the first hour of play to be aggressive with marginal hands and draws. Play a loose game, but not a stupid one. Be prepared to fold immediately if you don't like the board. The idea is to build a quick stack while you can still afford to see a lot of flops, then tighten up in the second hour when the blinds increase to more expensive levels.
2.) Play tight from the beginning, mucking everything but the biggest starting hands. This strategy values "survival" over "chip count". The idea here is that you can't win a tournament in the first hour, but you can lose one. Once the maniacs have flamed out, you can loosen up in the second and third hours to grow your stack toward the ultimate goal of reaching the final table with plenty of ammo.