Over time you will most likely need to update subscriptions, notifications, or general profile. All of these aspects of your user account are handled through the Profile tab of your account page.
To edit profile aspects:
If you haven't already done so, Log in. The Home tab should be visible.
Click the My Profile link. A view of your account will load.
Modify the properties that need updating. These include, general profile list, subscription, notification (Recent changes) preferences, password and contact information. Be sure to use the scrollbars to the right.
Click the Save Changes button at the bottom of the page. The new information is written to the registry.