Hello. I too am in San Diego. What part of town are you in? If you live in the southern end of the county I would be very wary of using ocean water. Too close to Tijuana and pollution. If you live any where near La Jolla you should see if Scripps still offers sea water to aquarist. For many years I would drive to Scripps Pier. They had a tap for filtered and unfiltered sea water that aquarist could use to fill up their containers. I have not used their service for a long time as I now get my seawater from my consultant. If it's a long drive try to find out in advance if they still offer filtered sea water.
There is a local parasite (gill flukes) that can survive in warm water and affect your fish. I used to leave my plastic containers sitting in the sun for a day to heat them up and cook the little buggers. Never had any problem. Once the water cooled I would do my water change.
If you have financial resources consider having a consultant, at least for a short time to get you off on the right foot. I was having a terrible time for about 2 years and then hired David at Reliant Aquarium Design to be my consultant. Now my tank is doing too good and I need to up grade. :)
Short of that consider joining SDReefs.com another forum just for San Diego. Try to locate fellow reefers in your neighborhood and see if one could be your mentor.
Also,
nothing good happens quickly in a reef tank. Go slow. Don't make a lot of changes. Slow and steady wins the race. Being impatient equals disaster and your tank ending up on Craigslist.
Finally, in the past I would have said, read, read, read ... to learn more. Now I say YouTube, YouTube, YouTube ...
Start watching how to videos. I like the educational videos offer by Bulk Reef Supply, but there are many other sources as well.
Best Fishes, Joe