[* black] Grasp the upper case on either side of the keyboard space and rotate up and away from the screen.
[* icon_note] You may be thinking you're about to break your upper case. Not to worry - the tabs holding the upper and lower cases together are very strong. Simply apply even pressure and continue to rotate the upper case up and away from the screen until it comes free.
[* black] Grasp the upper case and up away from the screen.