Stay to left at the bottom of the ramp. Take the very first left and another left back under the highway. Turn right at the stoplight onto Point Street. Cross over the Point Street Bridge. If the ticket booth is not operating, just drive right in.
Parking is free.
Go through the glass doors, past a reception desk, and around to the left. Take the elevator to the second floor. Follow the signs to the Annenberg Institute's reception desk, through the door and around to the right.