Greetings,
We've rented twice before owning, and here's what we did:
Figure out how many points you need. David's
DVC Rental has a calculator that can help you, and he can actually arrange for the rental if you'd prefer. We didn't use him, but have heard great things. His service is probably a good one, especially for a first time renter. (The
Timeshare store rents now too. You could check with them as well.)
Anyway, after you have an idea of how many points you need, you can check out the rent/trade board. (Be sure you're signed in first.) Then it's just a matter of finding the match. If you're within 7 months of your visit, then any points will do it's just the matter of getting availability and making a deal, agreeing on terms, exchanging paperwork/funds. If it's outside of 7 months you'll need someone who has points for the resort you're interested in.
I'm sure I'm missing something, but this should at least give you an idea.
Good luck.