Kindle Fire HD Storage on Earth and in the Cloud
Kindle Fire HD offers 16GB and 32GB of storage in its 7-inch model. Either storage amount will probably work just fine for you because when you own a Kindle Fire HD, you get free, unlimited Amazon Cloud Drive storage for all digital content purchased from Amazon (but not content that you copy onto Kindle Fire HD from your computer by connecting a Micro USB cable).
This means that books, movies, music, and apps are held online for you to stream or download at any time, instead of being stored on your Kindle Fire HD.
This Amazon Cloud Drive storage means that you don’t use up your Kindle Fire HD memory. As long as you have a Wi-Fi connection, you can stream content from Amazon Cloud at any time
If you’ll be away from a connection, download an item (such as an episode of your favorite TV show) and watch it, and then remove it from your device the next time you’re within range of a Wi-Fi network. The content is still available in the Cloud: You can download that content again or stream it anytime you like.
If you want to go whole hog into Kindle Fire HD Land, you can opt for the highest memory device, the 64GB 8.9-inch Kindle Fire HD 4G LTE Wireless version of the device. Just be aware that this version comes with the cost of an AT&T data plan.