2 things. First pay the extra money so as not to be bombarded by ads every time you turn it on, switch app or it goes to sleep. Second, it says you can use an SD card for your own files. however, its not easy and the normal apps don't work with anything that's not PURCHASED via AMAZON!
In my opinion, this device has become an extension of Amazon's marketing department and no longer serves as a pleasure device for customers. This is one of those things you leaving you to wonder what happened to customer service in the retail industry