This document provides an introduction to Facebook and how it can be used. It discusses Facebook's history and growth, the different types of profiles and pages, how to get started with a personal profile, how to find friends and share content, and privacy settings. Key points covered include Facebook being the largest social network with nearly 700 million active users, the four main page types (profile, group, fan, and others), and tips for using Facebook safely like using strong passwords and privacy settings.