You'll park (for a mere $1/hr!) at Parking Lot 5, right at the beach. Then walk north for a minute and you'll see the volleyball courts on the beach on your left.
Then come and get a lesson from an instructor who's AAA rated (the highest level for a pro player), or take a CardioVolleyball fitness class. Or both!
You'll enjoy the splendor of the beach, learn something new, meet some locals, and be able to tell all your friends you visited LA and played some volleyball with the best of 'em.