1. Log into Facebook
2. Click on your profile and click the "Edit Profile" button
3. Click on the "Contact Information" tab from the left hand side
4. Your current email address/addresses are listed at the top, underneath there is a link to "Add/Remove email" - click it!
5. Delete whatever email you want to remove or add a new one here. You will be prompted to enter your password to verify.
6. Once you're done, save the changes by clicking on "Change Contact Email" button.