This document provides an overview of Twitter, including its history and key metrics, common Twitter terminology like tweets, replies, retweets and favorites, etiquette for using hashtags and retweeting, and how to set goals and measure success for a Twitter account. It also reviews tools like TweetDeck that can help manage Twitter activities and increase influence, measured by Klout scores. The overall aim is to introduce readers to Twitter and help them get started effectively engaging on the platform.