This document provides an introduction to Twitter presented by Junita Lyon and Judi Gowing. It explains that Twitter is a free service that allows users to stay connected through exchanging short 140-character messages called tweets. It also includes tips for setting up a Twitter account, how hashtags work to categorize tweets, and some navigation features like following others and seeing trending topics. The document encourages participants to think of a Twitter handle and discusses how to customize your profile and avatar.