How do change my email address in Facebook

Step 1: Add an Email Address

Login to your Facebook account, and click on Account, and then on Account Settings:

Once in Account Settings, click on the change link next to Email:

Enter a new email address in the New Contact Email: field:

Once you press Add New Email, Facebook will prompt you for your password as a security measure:

An email is then sent to both the old and the new address for verification, and the Email section of the settings page changes to:

Check your email at the new address, and you should see a message similar to this:

Click on the link provided and you're almost done.
At this point, you can login using the new email address and your existing password. However, the old email address hasn't yet been removed, and will still get notifications.
That might be enough for you.

Steps 2 & 3: Remove the Old Address

Return to that email section, click on that change link again and you'll see something interesting:

All we've done so far is add an email address to the account. You now need to do two things, but only if you want to:

• Step 2: Select your new email address as the "Contact Email", and click on Change Contact Email. This will cause all subsequent notification to go to your new email address.
  
• Step 3: After you've changed the Contact Email, a "Remove" link will appear next to the old email address. Click that if you want that email address completely disassociated from your Facebook account.
  

Of course you can add yet another email address at this point also.