In early 2019 we updated PocketBible for Windows Desktop to include a better way of downloading books. If you installed PocketBible before that, you can get the latest version here: https://www.laridian.com/cart/freepbwin.asp. Download and run this setup program. Once you've done that, go to the Start menu in Windows, select the Laridian folder, and run the Cloud Library app. Log into your account and select the books you want to download. Once you've downloaded your books, run PocketBible and it will show you a help topic that explains how to open new books.