The first thing you find in the details page is the profile. From there you can change your name, country, picture and email address.

Click the Edit button in order to start making changes. When you are done, click Save.

The profile picture can be changed by clicking the rounded icon around it, then selecting Upload picture.

To change the email address, click Change email. You will then be redirected to a separate page where you will be asked to enter your new email and confirm it. A confirmation link will be sent to the new email. Click the link to validate it and make the change effective.