The document summarizes essential social media tools for scheduling, posting short links, metrics tracking, and mobile use. It lists Buffer, Hootsuite, and SocialOomph for scheduling posts, and Bitly, Ow.ly, and Google's URL shortener for shortening links. Popular metrics tools mentioned include Facebook Insights, Twitter Analytics, and Bitly stats. The document also lists several mobile apps for posting on social media like Repost, Tweetbot, Twitter, Fenix, and LinkedIn's mobile site. It concludes that these are the most important tools for social media use.