The location of your downloaded book depends on the device and browser you used. On a PC, check the "Downloads" folder in File Explorer (Windows) or Finder (Mac). In mobile devices, look in the "Downloads" or "Files" app. If you used a browser, open its download history to find the file’s location. For e-books, check apps like Kindle, Google Play Books, or Adobe Digital Editions. If you downloaded from a specific website, revisit it to confirm the default save location.