1. Log in to the site with your current details. (If you have forgotten your current username and/or password use the 'Reset your password' feature. The link is also in the lower left log in box on the site).
2. Open your Account (the link is also in the upper right menu above the search box).
3. Scroll down to the menu options under 'Your online account' and click on the block 'username and password'.
4 Change your username and/or password and click 'save'.