First, welcome to Prime
Second, fill out your profile (we have no idea who and where you are, or when you're going to be looking in earnest)
Third, start checking junkyards and auctions for salvage NSX's
in your price range that's your best option, the high mileage in need of maintenance is your next place to look.
Fourth, do your homework, read all the posts about values, common problems, etc. than come on and ask your questions. There's a wealth of information from past posts, and everyone here will be more than willing to help someone who's willing to help themselves.
Fifth, check the for sale listings here, E-bay, Autotrader, etc
Sixth-Good luck, the car is certainly worth it, maybe you'll find that if you save a little more you'll be able to widen your search to include better condition cars that will treat you better from the start!