How do I use the cloud on kindle fire?
All you need to do is to connect this Cloud software to your Kindle Fire. This will act as storage, where you will be able to store all your data and other apps. Read more on http://www.dummies.com/how-to/content/take-advantage-of-free-cloud-storage-for-the-kindl.html.
Everything you put on your kindle fire, unless you get music off of your computer and not the amazon store, is saved on your cloud.