You will receive an e-mail with steps to reset your password. When you link a Nintendo Network ID you are able to purchase Wii U and Nintendo 3DS games through the online Game Store, to combine your Nintendo eShop balances, and to earn My Nintendo Gold Points on Wii U and Nintendo 3DS purchases.
Important: The ability to use a Nintendo Network ID to sign in to an existing Nintendo Account or to create a new Nintendo Account has been discontinued.