Hi, and welcome.
We purchased our boat from its PO from Coyote Point. Small world.
I spent the first month crawling all over the boat to learn what was there.
I'm sure that you can find the manual, either right here on sbo or elsewhere on the internet with a good search.
But most of the systems on all of our boats are pretty much identical, so the West Marine Advisors should be of great help.
You should do a search here on Beneteau wiring, that specific phrase, and read what Maine Sail has written about how your boat's electrical switching system actually works.
Nice boat, have fun.
I sailed SF Bay from 1978 to 2016. Lovely place, ocean and Delta, too.