I have been to Los Angelus Orange County to be exact. (for family events) not my cup of tea. And been to Malibu, Cal for a wedding. Years ago visiting relatives in Whittier, went as far North as Solvang, Cal.
However, when on the West Coast I usually plan a trip to the coast line of Oregon, (just love it) and then up as far as the end of the the coastline of Washington State, love that area.
Did land once in San Francisco, on a lay over, not enough time to do anything. ----One day.
If your ever in Newport, Oregon, you have to check out the Sylvia Beach Hotel, a wonderful place to stay.