A:AnswerYou do need an Amazon account. We are also Amazon Prime members so we get a lot of free prime movies, There are other movies you do have to pay for to watch, but they are only a few dollars. Hence the reason for needing the Amazon account.
A:AnswerNo you don't have to pay extra to use Netflix with your account. Prime is optional, there are alot of stuff that free, prime is great though especially if you have 4k tv and get the fire tv instead of firestick.
A:AnswerHold the remote upside down facing you so that you can push down and forward to open the battery compartment. Slides out very easily with not too much force.
A:AnswerYes, you can use it with any brand TV, since this device only needs an HDMI port to work on your TV, just like using a Blu Ray player. It won't interfere with the Google TV options of your TV.