SoCal, "B E A utiful" diving. Do check out California Diving News for all the local info, shops, charter boats, etc.
California Diving News - The Premier Website for California Divers
Don't miss the Yukon & the Ruby E in San Diego if possible, but they are deeper more challenging dives. A dive guide on those dives is highly recommended with your novice experience level. That being said, those dives have been my coldest ever dives @ 51 deg. Wasn't as much fun in a 2pc 7mm suit, but much better the next time in my drysuit.
OTOH, The Casino Point dive park at Avalon on Catalina Island is certainly alot easier diving (many OW classes dive there). The park waters tend to be at least 10 deg warmer than San Diego water (something to do with currents

) There is a dive op right in the park for gear rental.
www.catalinadiverssupply.com
Take a ferry to the island, walk around the harbor to Casino Point. You'll have an awesome day. The kelp forrests are phenomenal and not to be missed. Oh, and if you head over to Casino Point, shoot DrBill here on SB a PM and he'll probably come out to greet you.
When you make your plans, post them and maybe a few Scubaboarders will come out to join you. We are a friendly bunch... :wavey:
Have a blast and safe diving!