Question

How do I log out

Answer 1

Go to the right hand corner where you see the dolphin and there is a red logout button.
(:

Answer 2

Power off your device

Answer 3

Or you can go to your profile, account settings, and sign out of all sessions (every device you signed into will be logged out)

Answer 4

There is literally a button that says log out on your screen. Above your name. Looks like someone already explained that, but seriously. ಠ_ಠ