To change your name or update the email connected to your account, you click on your name in the upper right corner, and choose Profile from the drop-down-menu. Click on the Edit button for the top box that says Info, update your information, and confirm via the Save Changes button at the bottom of the page.

When changing your email address, an activation email is sent to your new email. Click in the email and log in to confirm your new address.

When logging in on a journalist account, you need to click on My profile to choose Profile from the drop-down menu.

Please also see:
Where do I change the settings for my personal user account?
What is the difference between a journalist account and a press officer account?
What do I do if I forget my password?