Ancestry.com has partnered with K&Company to produce a line of products. These items are available in a number of places online (Ancestry, K&Co, Scrapbook.com, etc), as well as in stores such as Target, JoAnn, and Archivers. For beginners, try this kit, which has just about everything you need to get started.
Other brands, such as Karen Foster, Deja Views, Making Memories, Tim Holtz, etc., produce products specifically for scrapbooking your genealogy. Items include papers, stickers, alphabets, brads, embellishments and more. Try browsing Scrapbook.com's online store for terms such as "family history" and "heritage" to see what else is available.
Before you start shopping, browse around and see what sort of style you like. The genealogy products are often in a neutral and "old fashioned" colors and themes. If this doesn't fit your style, there's still a world of products available outside of the genealogy section. Planning ahead on what sort of pages you want to create will save you from buying a lot of products that you end up never using. Perhaps, go ahead and pick out a few photos that you'd like to start with and buy items specifically for those photos.
Also, if you're brand new to scrapbooking, make sure you've gotten together your beginner's kit!