First of all, you need to familiarize yourself with the program and the resorts and make some decisions on what is important for you.
DVC has 8 resorts available at WDW and two current properties off site with two others coming soon in California's Disney Land and Hawaii Ko'Olina. You would need to decide which home resort works best for you and buy your points at that location. Don't look at it as $16000, since that is about what the fewest points would cost at AKV. You need to look at how many nights you are likely to want to stay a year and in what size unit.
For example:
We like to go 2-3 times a year and will usually stay in a 1 bedroom if it's the two of us, but will do a 2 bedroom if we have our adult kids or other guests with us. We originally purchased 230 points at OKW knowing that it would get us at least a 2 bedroom in most of the seasons we would travel. After the first year, it was apparent that we needed more points, so we added on another 150 also at OKW. Our vacation habits did change after owning DVC, because we found we didn't have to worry about where the $3-5000 was coming from for on site accommodations each trip. Instead, we "pre-paid" for about 45 years of vacation accommodations in Deluxe Disney resorts at 1997 prices. Sure we have to pay maintenance fees just like we would have to pay for maintenance on a vacation home, but it's significantly less than what we would spend paying out of pocket for those deluxe accommodations every year. Plus...it MAKES us take those vacations! We look forward to them, and we KNOW we are going to love each one!
Now, all that being said....If you don't have the ready funds to "buy" your 50 years of vacations now, you CAN finance it just like you would a car or vacation home, but many feel that it is not fiscally responsible to finance luxury items. You need to know how you feel about that. Farnkly, I'm not so sure in this changing world that vacations are a luxury. I think they are a necessity.
So, your homework now is to study up on all the DVC resorts and see what appeals to you most. Disney CAN still sell ALL the resorts, even the "sold out" ones, because they are constantly getting back points from ROFR. Resales can cost significantly less though, in some cases.
Read as much as you can on these boards, and then come ask some specific questions of us.