If you're new to the Facebook user community, don't be shy: you're joining around 2.7 billion users (roughly two-and-a-half Chinas) worldwide, so you'll want to make sure you’re being as sociable as possible. And with more functionality and ways to say hello—like 3-D photos and Video Chat rooms—than ever before, Facebook For Dummies is the perfect, informative companion to get and new and inexperienced users acquainted with the main features of the platform and comfortable with sharing posts, pictures (or whatever else you find interesting) with friends, family, and the world beyond!