If I under stand correctly a Nook is a reader and works wirelessly (WIFI). This modem connects to your cable company's cable. You will then need a wireless router to connect to your cable modem (this unit) and wirelessly to your nook.
your device IS wifi capable, so the modem will work fine however you will also need a wireless router to broadcast your internet signal and allow the NOOK to utilize it. if you have any more questions i'm happy to help.