Mine connected properly to my home wifi (after I typed in the password).
It also connects flawlessly to the free AT&T wifi network at my local B&N store.
Is your wifi at home password protected?
If the advice by Nook_User doesn't work for you, then the problem may be deeper. Has the Nook connected to other wifi hotspots the same way? Has it ever connected to another wifi hotspot successfully? If it does work but just not at home, then we can figure out what's different about your home network that's preventing it from connecting.
I have wifi service in my home. All of my devices make the connection, except my nook. The correct network is listed and showing as having a strong signal. I restarted modem and wifi and was able to connect once, but then it disconnected again. Does anybody have a solution?