I've read about IDPA, and it sounds like a good way to build some skills, as well maybe meet some new friends. I like the range on its own, but shooting at various targets and under time would be good exposure for me. I would probably at least start off using my XD compact.
You will definately gain new skills. Shooting while advancing, retreating, moving to cover and from cover to name a few. It puts a whole new perspective on just shooting to begin with. You'll almost never want to shoot stationary at a plain target. It is a lot of fun, you'll meet some good people and interesting characters, and at the very least you will learn something. The main item to remember is to go SLOW. You will definately notice when you moved faster than you can shoot. Eventually it will all start to click and you can add in speed. I by no means am at Tards level, which is why I'm still typing but I have seen guy's blow through a stage but then there score suffers. I have done this as well. Plus, to keep things in perspective, every no shoot I make, was an innocent, so I focus on making my shots first.
I did forget to mention that you will be required to wear a cover garment. Some guy's use button down shirts, coats, zip up sweaters or vest. I started out using just a zip up fleece until I decided I want to do this and then I bought a 5.11 vest. Give it a try, let the proctors know your new and if they're cool (which they should be) they'll help you out. Have fun and let us know how you do.