This document provides an introduction to using Twitter for personal and professional development for teachers. It begins with explaining what Twitter is and how it works as a microblogging platform. It then discusses why teachers should join Twitter, including to make connections, learn from others, participate in discussions, ask for help, and share information. The document outlines how to get started with Twitter by creating an account, following relevant educators, retweeting posts, and provides suggestions on who to follow in the world language education field. It closes by noting to tweet wisely as posts are public and to maintain a balanced use of the platform.