2. If you want to delete the e-book you bought in Amazon, select "E-book" in "Display" and click "Delete".
3. If you want to delete the e-book transferred from the mailbox to Amazon Cloud, please select Personal Documents in Display.
4. Click the delete option, as shown in the figure below.
5. Complete the deletion operation on Amazon website, and then return to Kindle device for information synchronization. Click sync my Kindle in the settings option, and the e-book can be completely deleted after synchronization is completed.