How do you transfer e-book from cloud to kindle?
If you use a micro-usb cable and connect it to your computer,
you can transfer files to and from your Kindle just like it was an
external hard drive. Place any .mobi files in the Books folder, and
place .pdf and other formats in the Documents folder. Once you've
added your files, you may need to restart the Kindle to get it to
recognize your new books.