I actually got pretty good at showing people round at one time but I refuse to do it anymore. Too exhausting to do in L.A., there is just so much to see and so much driving in a car and talking. One problem, (maybe two), is that you live in the South Bay and you only recently moved to the L.A. area. I would have no clue what to show people down there. The beach areas are very nice but there is not much to see for a tourist once they've seen the beach and the cute little neighborhoods near by, especially someone from Europe or some other interesting place. People generally want to see the more famous areas of an area basically bordered by Hollywood to the east and Malibu to the west with Beverly Hills, UCLA, Brentwood/Palisades/Santa Monica/Venice/etc. in the middle.
Don't get me wrong about the SB beaches, it's a cool area for a young person who likes a certain type of lifestyle but it's also the epitome of the old saying about L.A. being a great place to live and a lousy place to visit. San Francisco is the exact oposite, FWIW. (IMO of course).
L.A. is a place where you really need a good tour guide in the way of someone with a fun life showing you around or you just don't know WTF is going on. In the last 48 hrs., my younger friends have been to the Foster for the People show @ the Wiltern + afterparty w/ major snugs and Bill Clinton's 65th BD party/benefit @ the Hollywood Bowl w/ Stevie Wonder/Bono/Lady Gaga/etc. and huge afterparties, I know all this courtesy of FB. (I live like a hermit in comparison).
There is more than one L.A. to see on any given weekend. maybe there are a thousand. That's what sets it apart from just about any other city in the U.S. other than NYC.