Open Question: I want to get a new laptop, but...?

I have no idea where to start! I want it for everyday use- facebook, schoolwork (I'm a sophomore in high school), pictures, webcam, games and such. It doesn't have to be real big but not small (I'm clueless on the sizes and what not) I don't want it to be too expensive either because I'm asking for one for my birthday(: So if you could give me guidelines, links, or whatever, it'd be really helpful! Thank you!!!