Use the “Search for Books” feature. Once you’ve found the book you’re looking to add, select the “I’ve Read It!” button on the bottom right of your screen. From there the app will guide you to adding the book to your library. You can rate the book, leave notes for yourself, and choose which section and shelf to place the book under in your personal library. Don’t worry, the ratings and notes are only for you to see, so be honest!