This document provides an overview of social media and how it has evolved communication from one-way interactions to conversations. It discusses how audiences have become participants and how trusted sources of information have changed. The value of social media is outlined as sharing expertise, finding expertise, self-promotion, making connections, collaborating, and recommending. Popular social media tools like LinkedIn, Twitter, YouTube, blogs, and Facebook are described. Examples are given of how information spreads through sharing and retweeting on Twitter and LinkedIn is discussed as the "pleated pants of social networks" and a digital CV for connecting with colleagues and participating in groups. Next steps are suggested for using LinkedIn and Twitter.