This document provides an overview of how to use Twitter, including how to send tweets, find other users, build your profile, understand tweet terminology like hashtags and mentions, and access Twitter from desktop clients or third party services. Recommendations are given for using Twitter to find people through search or directories, and examples are listed of library-related Twitter accounts to follow including institutions, individuals, associations, and public libraries. Basic instructions are provided for posting tweets, adding multiple users, and accessing Twitter in an accessible way.