This document provides an overview of social media 101. It begins with a brief history of social media from 1971 to present day. It then discusses what social media is, why companies should engage with it, and key metrics around its use in Singapore. The document outlines various social media channels like Facebook, Twitter, YouTube, and Pinterest. It also provides examples of successful social media campaigns from brands like ASOS, IKEA, Mini Cooper and Old Spice. The document emphasizes that the goal for both consumers and companies is to make life easier and provide value through social media engagement.