How to best manage tracks in LE

Any advice on how to manage the takes for each track when recording a session? I've been working on a session for a couple of weeks, and since Pro Tools doesn't destroy the .WAV file when you record over a particular track, or even a part of a track, my session is getting huge. Its probably over 3GB for maybe a 10 track session. I still have a good bit of work to do on it as well. 95% of the time when I'm working on a session, I only care to keep the most current versions of each track. Is there a clean way for me to A.) erase all previous versions and takes, and B.) Record in a way that it only keeps a history if I specificly instruct Pro Tools to do so? I'm sure this is basic stuff, but I'm brand new to Pro Tools, and I haven't found it in the Users Guide. All advice is appreciated. Thanks, Russ

From the regionslist audio dropdown menu: Select-unused regions. Delete selected.

Awesome. Thanks!

also, i believe at the end of a take, if you don't want it, hit ctrl backspace.. it will delete the file that was created with that take, so you don't take up so much room if you do a lot of takes.. tim

I think that's actually apple+z to discard the take when you've stopped recording. If you need to quit recording while your in record and discard the take use Ctrl + period. This also works during bounce to disk.

Sorry, metaltim. I am a PC virgin.