This document provides an overview of remarketing and how to set up remarketing campaigns. It begins with an introduction to remarketing and how it works to retarget past website visitors. It then covers how to build remarketing lists by tagging the website. The document reviews different types of remarketing campaigns for display and search advertising. It provides best practices for remarketing campaigns such as segmenting lists, using automated bidding, removing restrictions, and acquiring new customers. Dynamic remarketing is discussed as a way to show the most relevant ads. Tools for implementing remarketing are also mentioned.