If you have ever tried to use Libby on a Kindle, you know how frustrating it has been. Amazon would much rather you not, and buy books from Audible instead. Finally, though, they have allowed the Libby app to be available in the Amazon app store.
If you have been using a Kindle Fire to read library e-books, you no longer have to go through the convoluted process of checking the item out in the online catalog, sending it to your Amazon account, and manually syncing it to your device. You can just go to the Amazon app store, download Libby, sign in with your Library card, and see how the other half lives!