WHERE IS THE SYNC BUTTON ON NOOK TABLET?
Well, I don't have a Nook tablet but according to the User Guide, in the library, it's in the lower right corner, the two arrows in a circle.
Yeah, what bklvr said.
If you go to theLibrary Page, at the bottom left, there are two circular arrows that together form a circle type pattern. Tap those. They will start moving around in the circle. That's the sync button.