This document provides an introduction to social media platforms and how to get started using them. It lists common platforms like Facebook, Twitter, Flickr, Instagram, Pinterest, LinkedIn, YouTube and Blogger. It then focuses on describing how Twitter works, including having a username, posting tweets with hashtags and links, and using tweets to share updates and have private conversations. The document encourages beginners to choose a platform they feel comfortable with, have a topic in mind to focus on, search for credible sources on that topic to follow and engage with, and then start sharing content.