Assuming you're playing NLHE, I recommend not getting PokerTracker until you're playing 25nl or 50nl. PAHUD overlays the PT stats on your table, but there's free programs to do this also, like GameTime+. You might also want to check out some AHK scripts (AutoHotKey, a Windows macro program) for things like betting the pot with mouse keys, auto-opening tables, auto-reloading, etc., and AHK scripts are free.