I agree with what's been said above.
* Replace your standing rigging if it's more than a few years old.
* Get yourself a righting line. The cheap-o way is a 25' length of thick rope tied in the middle around the dolphin striker and either end tied to the rear pylons. If you capsize then you untie the upper one and pull. The problem is if you're not super quick sometimes the boat will want to turtle. A faster system helps. The easiest I've used is the hollow-braid rope with bungee inside. I have a different system, but at some point I'll upgrade to the above.

* You should also probably get a righting bag, since otherwise your 200lbs might not be enough to get the boat up in other than high winds.

* Get Catamaran Racing: For the '90s by Rick White. GREAT book that'll give you a good foundation.

* Go sailing with other people. If you see equipment they have that you like, then figure out how to use it and maybe try it on your boat. Otherwise, don't bother with a bunch of accessories you only kind of understand.

Good luck!