This document provides information on how to search Twitter, including what Twitter is, who uses it, and how to perform basic and advanced searches on Twitter through various search engines and tools. Twitter is a microblogging platform where users can post tweets of up to 140 characters. It has over 92.5 monthly active users who post around 340 million tweets per day. The document outlines different search operators, Twitter's advanced search features, and how Twitter is searched through Bing, Google, Yahoo and other third party tools.