This all should have been a new thread, for sure... but it's here now, so.....
Yes, do yourself a favor and get Poker Tracker and PAHud - both well worth the money. To improve, read and post a lot here
then read books, and of course play play play play play.
As for what games you should be playing, stay within your bankroll and move up as you ca nafford it. This will make the decision making easy for you and will all but guarantee that you won't go broke.