NOOK Tablet - Return to Home Screen

If your NOOK Tablet is awake, you can press the NOOK n button (the raised silver NOOK logo button on the front of your device, directly below the color touchscreen) to bring up the Quick Nav bar. Once the Quick Nav bar appears, tap Home to return to the Home screen at any time.

You can also press the NOOK button twice in order to return to the Home screen.