To change any of the personal information you entered when you registered (including your password), Log into your account by clicking the "Sign in" button at the top right of the website. Once logged in click "My Account" from the account drop-down located at the top right of the website. This will take you to your account page where you can change the desired information by clicking "edit". Once you have completed the changes make sure to click save to have the changes made to your account.