Your profile holds your name, email address, and photo. You can update them at any time.
Open profile settings
Click your account name at the bottom of the left sidebar, choose Settings, then open the Profile tab.
What you can change
Profile photo: choose an image, then save it with your profile updates.
Name and email address: update these, then click Save.
This page is also where you can permanently delete your account. Use that with care, it cannot be undone.