Welcome aboard, I'm sure you will learn a ton as time goes on. There are a few great shops nearby you, Mori's shop is in carson, Neptonics in Long Beach, Sturgill in Torrance, and Spear America in Irvine.
A lot of surf buddies got into diving after getting the lobster bug. Season is coming up. Get good gear and dive when it's flat. I think surfing is a perfect compliment to diving. Like surfing, get good equipment. Diving in your 4/3 won't cut it for long. As you progress get better gear. It can be done with churchills and 3 prong but I'm guessing you're past that. Be safe.