How do I delete eBooks from my Cruz?
In the Kobo app, go to your Library listing of books, press and hold the book you want to delete and select Remove Book. This action deletes the book from your Kobo library. If this is a paid book, it will need to be repurchased if you want to read it again.
In the Kindle app, go to your downloaded books, press and hold the book you want to delete and select Remove from device. This deletes the book from your tablet but is still accessible in your Archive if you want to re-download it to read it again.
If you want to completely delete a book from your Kindle account and remove it from the Archive list, visit Amazon.com, log in to your account, go to Your Account > select Manage your Kindle near the bottom > select Books on the left > choose the Actions button to the right of the book you want to delete > choose Delete from library. Select Yes to confirm deletion with the understand that if you continue, you will have to repurchase the book if you wish to read it again.
The deleted book will be removed from the listing once the app syncs with the Kindle server.