The Internet connects millions of computers globally through a massive network so they can share information. It allows access to the World Wide Web, email, and phone calls through applications like Skype. Facebook is the most popular social media site that allows users to connect with friends, share photos and updates, message others, find events and local businesses. It provides privacy controls to customize sharing and manage who can see your posts, photos, and personal information. The document provides instructions on how to set up a Facebook account, find friends through contacts or suggestions, customize privacy settings, and share status updates, photos, links, and videos while following basic etiquette guidelines.