To change the email address associated with your account, click your initials (default) or profile picture in the lower left corner of the screen and visit your User Profile. On the Overview tab, scroll down to the "Email" field and click the "change" hyperlink:
Here, you'll be prompted to enter your new email address, then receive a confirmation that a validation email has been sent to the new address. Click the "Change Email" link in the verification email to complete the email update.
The first and last name associated with your user profile can also be updated on the Overview tab of the User Profile page.