Welcome! Understanding DVC can be overwhelming but you have definitely come to the right place.
The great thing about DVC, IMO, is that you buy a set number of points and then decide how to use the points each year to visit WDW. For me, with the points I own, I will be going on one yearly trip for either 5 nights in a 1 bedroom, or 8 nights in a studio (depending on how many of my kids join us).
So, the first thing to do is look at the
point chart at the top of the page and think about what and when you want to travel. If you are looking at a week, just pick a season, pick a resort that you might want to own at, and see what the point cost is.
Once that is done, then you know about how many points you would need for a yearly trip. Of course, you would not be locked in to always going a week at a time, but at least you know what you will be able to do.
There are members who start out with the plan to go every other year and therefore, can buy a contract with 1/2 as many points and utilize the "banking" option for DVC (you can bank up to 100% of your points into the following year). For example, 7 nights in a 1 bedroom, during Dream Season is 196 points.
For someone who wants to go every other year, they would only need a 100 point contract (which would run about $6500 initially) and then just pay the yearly MF's.
The more you read and the more questions you ask, the easier it will be to start to understand how DVC works in comparison to other timeshares.
Good luck!!!