I'm actually looking at best buy's financing options. As a few people said, these are some of the best ways to start building a credit rating.
A few of you said that if it's just to buy the camera, dont do it -- but the reason I came on and asked about it is becuase i am concerned about my credit, and even though I'm aiming to buy a camera, I'm also thinking of trying to build a decent credit rating since i'm young and will need to get student loans within the next year or two -- where I will need a little bit of credit.
Best buy seems to have some really good offers -- wether I will get accepted or not is another concern, but some of their options look very attractive.
Thanks to everyone who posted!! I'd rather find out how to build a credit rating from people who are on a bmw website most likely becuase they've built a good credit rating, than my parents who are in debt (no offense to them.)