You need to go to Amazon.com and click "Your Account" in the upper right hand corner. Select the hyperlinked section you wish to change in the Settings section of your account page. For example, select "Change Name, Email Address or Password. Finally, click the "Edit" button to make your changes and then save those changes to update your account information. Read more from www.ehow.com/how_5692602_update-kindle-account.html#ixzz1uh4ySysH.