Hi, and welcome!!! Here is a link to a recent post similar to yours, it may give you a few ideas.
http://www.disboards.com/showthread.php?t=1956066
I wouldn't buy too much other than basics until you find a style that suits you. I got started with Creative Memories (CM here), and even though I've changed things a little bit, I still use a lot of their products.
I would recommend basic cardstock to start, a good adhesive (I like the CM tape runner and also use Zig glue), a black pen for journaling, a photo trimmer, paper trimmer.
Also, you'll need to decide what size pages/album you want to use. I use the 12x12, some like 8.5 x 11, and there are some other sizes as well. There are a few different types of albums as well.
If you're looking for Disney specific embellishments, you can find them at AC Moore, Hobby Lobby, Michael's and I think JoAnn's, or several websites also.
I hope this helps, if not, ask away!!
Steph