In a nutshell....
1. You make a 1-time purchase of a contract for a fixed amount of points (150 points minimum). You pay per point, thus 300 points would cost twice as much as 150 points, etc.
2. Your points will have a 'use year' which is simply the month your 'year' begins. If for example you had a June use year, then every June you receive a new allocation of points which you would use during the following 12 months.
3. There are annual dues, or maintenance fees, you pay for your points. This is on a per point basis, and varies slightly depending on which resort you own at. Currently dues are approximately $4.00/point, so if you owned 150 points, you would currently be paying $600 annually.
4. You 'spend' the points however you wish, to 'purchase' your accommodation. The number of points required for an accommodation vary according to the following: A. What Disney Season your vacation will be in. B. What type of accommodation you want (Studio, 1BR, 2BR, 3BR). C. What resort you want to stay at, and D. The days of the week. (Weekend days require more points). You can use the
point charts to determine how many points would be required for any vacation you want to plan.
5. Outside of your initial one-time purchase, and your annual dues after that, there are absolutely no other required costs to owning DVC. For example, there are no room taxes. (Taxes are already included in your annual dues, as well as maintenance, all resort services, and so on).
6. DVC was constructed (is being constructed) under two phases. The purchase contracts for all resorts is 50 years from the date each phase started. Phase I started in 1992, thus it ends in 2042. Resorts under this phase include all resorts except SSR. SSR is a phase II resort and was started in 2004, thus all SSR contracts expire in 2054. SSR is being sold currently by DVC. If you purchase today, that contract would expire in 2054, so you'd get basically 47 years usage out of it. If you purchased a resale, for example at OKW, it expires in 2042, so you would get approximately 35 usage out of it.
7. You don't have to go every year to use your points. You can 'bank' points into the following year, or 'borrow' points from the suceeding year. Keep in mind we're talking 'use year' and not calendar year. For example, if you had a June use year, then you are currently in your 2006 'year' which runs from June 1, 2006 through May 31, 2007. Your 2007 use year would begin on June 1, 2007.
If you owned 150 points, but won't be going on vacation until September 2007, you'll see that that date is in your 2007 use year, so you could bank your 2006 points, and then have 300 points available for that Sep 2007 vacation.
8. You can make reservations up to 11-months ahead of time, for your home resort, or up to 7-months ahead of time for a non-home resort. The resort where you own your points is your home resort. You make reservations based on the vacation dates, not on use year dates. For example, you have a June use year month. You have used all your 2006 use year points. You want to make a vacation in July 2007. That requires 2007 use year points. You may still call in August 2006 (11-months prior to your vacation) and make your reservation, using your June 2007 use year points.
9. DVC membership has some additional perks, but there is no guarantee they will always be there. One of the best perks currently is you can purchase annual passes at a discount ($100 off for regular AP, or $125 off for a Premium AP). Other perks include restaurant discounts, etc.
10. DVC also on occassion has special events for members only. If you happen to be at WDW at the right time, you can attend these events.
11. DVC points can also be used for non-DVC resort accommodations. Here you have a plethera of choices which include hotels all over the world, and trades into interval international, and so on. Normally these uses of points do not have the same 'value' as they would have for a DVC resort. Example: You could get a hotel room in London, but the points would have gotten you a 2-BR villa at DVC in WDW. Although, one thing that might interest you is that you can use points at
Disneyland Paris, and besides getting you the hotel room at Disneyland Paris, it currently also includes admission into the park.
12. Most important, you become one of the DVC 'family'. This gets you a 'Welcome Home' when you stay in your DVC-Villa.
Hope this helps.