<b>Pagination</b> often comes up when working with <b>Firebase</b> and building social media applications. The reason for this is because pagination allows us to more quickly fetch data from <b>Firebase Database</b>. In this lesson, I'll walk you through how to implement this very tricky feature. First we'll tackle how to paginate through <b>Post</b> objects in the User Profile screen. In order to do so, we implement a few tricks on <b>cellForItemAt</b> to trigger the pagination process. Once you complete this lesson, you'll be ready to move onto paginating through data and sorting based on a key such as creationDate on our <b>Post</b> model.