This document provides an overview of using Twitter for libraries and librarians. It defines Twitter and explains why it can be useful for libraries. The basics of Twitter are explained, including the anatomy and types of tweets like general tweets, replies, mentions, retweets, and direct messages. Advice is given on getting started with Twitter, including setting up an account, writing a profile, adding a photo, following others, and engaging by tweeting. Suggestions are made on who to follow, such as authors, news sources, and other librarians. Tips are provided on connecting with authors through Twitter and permission is given to "lurk" or consume content as a way to get acclimated to the platform