This document provides an introduction to using Twitter for professional development purposes. It outlines how Twitter can be used to: - Build a professional learning network (PLN) of educators from a global audience to gain advice and feedback - Participate in discussions using hashtags and ask questions anonymously that might not be appropriate for colleagues - Find new resources and ideas by following others with similar interests and reading articles they share - Get feedback and help in real-time from one's PLN The document then provides basic instructions on how to set up a Twitter account, including choosing an appropriate bio and profile picture, and tools like TweetDeck that allow for posting longer tweets.