Information design studies information disclosure policies and their effects on the payoffs of senders and receivers of information. In this short course, we provide an overview of information design, with an eye towards more applied work.We start with Bayesian Persuasion, which presented a framework for studying information design (Kamenica and Gentzkow, 2011). We then study two applications to markets. First, we study how a seller’s ability to price discriminate based on observable  characteristics of consumers affects producer and consumer surplus (Bergemann, Brooks, and Morris, 2015). Second, we discuss whether or not consumers benefit from knowing their own preferences (Roesler and Szentes, 2017).