If you're an avid e-book reader or someone who has an extensive library of Kindle content, now is the time to back up your books. Starting on Wednesday, Feb. 26, readers will no longer be able to ...

Kindle books are all in Amazon's proprietary e-book format of .AZW3 files. These files can only be read on Kindle devices, so if you want to read your e-books on another device — whether that be ...