To change your email address, log in to your account. In the profile section, update your email address.
In order to ensure that new email address is valid a verification notice is sent both to the old email and to the new email address.
Until that verification occurs your email will not be activated yet.
The new email address contains a link which must be selected in order to verify it is working and that you are the owner of this email address.
Your email address is also your log in user ID. However it will not be take affect as your new user ID until the email address has been verified.