A:AnswerYes! Just pick what service you want to use such as pandora, Spotify , Napster, etc... You can also listen on you tube and watch movies on this. Pretty much anything you can do on your phone, you can do on this iPad.
A:AnswerMS office is downloadable from the App Store on this device, but you need to have a separate subscription to be able to login and use the software.
A:AnswerYes, you can order e=books from Amazon.
You will need to download the Kindle app.
I believe you can get cases from Amazon, I purchased one from eBay as Best Buy was out of stock of the style I wanted.
A:AnswerI am pretty sure you have to have Wifi to use the built in GPS feature. If you used a hotspot from your phone or bought a cellular model it would work though.
A:AnswerYes, you can insert a nano sim in it. You can also use the built in e-sim if your carrier supports it. Keep in mind that you won't be able to make regular phone calls. It's mobile data only.