Yea, for $50, the .01/.02 tables are going to be what you need to play until you get up to about $100, then maybe bump up to the next level, .02/.04(can't remember if FT does .02/.04 or not). Like McCluskey was saying, there are a bunch of BR Management articles on the forums, so you should be able to find some good info for what size BR you need to move up to the next limit.
And PokerTracker is a very valuable tool for the cash game player(tournament as well), because it allows you to find the leaks in your game, and also your opponents. This is important because you will probably find that you are playing some of the same people over and over again day after day, so you will gather all sorts of info on their playing styles.