Hootsuite is a social media management platform that allows users to organize, update, and engage with multiple social media accounts from one centralized dashboard. The presentation teaches how to sign up for Hootsuite, add social media accounts like Twitter and Facebook, organize accounts into streams, schedule posts in advance, like/comment/retweet updates, and access Hootsuite across devices using mobile apps. Hootsuite provides key features to help users efficiently manage their social media presence from anywhere.