Click the profile picture at the top-right of the site navigation bar.

One important setting is choosing if your email should be publicly visible.

Hide my email address from non-privileged users
Allow everyone to see my email address
Allow only other course participants to see my email address

You can also choose to upload a profile picture in the "User picture" menu. Click the 'file' icon and follow the prompts to do so.

Click "Update profile" to confirm changes.

Edit Profile Settings