Its kind of tough to suggest something w/o knowing more about you, what you like, where you're from, etc... You've come off as a conservative guy, so we don't know if that means you would get morally offended by some of the wilder stuff in LA. And, when I travel, I hate to go and do something which I could have done at home. This is probably one of the dorkiest things you could do, but you could also buy one of those star maps and drive around searching for celebrities' homes. Don't expect to see any celebs, but you'll get a good idea of LA afterwards. Maybe, even go to Disneyland in Anaheim if you're willing to drive. If you go on weekday, the lines aren't too bad. Definitely, look for Tommy Burgers. I personally prefer it to In-N-Out, and they're both only located in SoCal. And, remember, don't talk about how you don't want to be a doctor unless you're compensated enough. It comes off as crass and unprofessional.