Hi Guys, I have purchased a new Kindle for my grandson's Xmas. I will need to set it up and register it before the 25th. Can someone point me in the direction of how I can set this Kindle up without it "Synching" to my other 2 Kindles i.e. I don't want it to download / share books that are on my wife's KIndle. This currently is the case with his existing KIndle Fire.