You need to try and find a job! Jobs out here are few and far between right now.
As far as an apartment, you can try and get a studio apartment in Korea Town or in Hollywood. They aren't the safest, but you can find something cheap.
Roommates is kinda scary because you don't know anything or anyone. Plus, expect to cough up $1000-$1200 bucks for your share of the rent. To get a place on your own that is decent of going to cost as much as your tuition. That's why i say try to find a studio apartment.
Also, do you have a car? Parking is atrocious out here.
There is public transit, but it's not fun for someone who isn't from here (not so friendly people who ride the bus/train). I think a monthly MTA bus pass (can be used on the trains as well) is about $40 bucks (may have went up since the state is bankrupted and trying to squeeze money from anywhere they can get it).
If your school has dorms (like at UCLA) then STAY ON CAMPUS!
But if you're at LA Film School, then you're screwed. Korea Town is your best bet. It's centrally located as far as using public transit. The rent isn't THAT bad.
Have you went on Rent.com or Apartments.com?
You'll be fine. You're just going to have to put in a lot of work to orchestrate this move. Also, if you're getting student loans, try to get some extra cash to pay your rent for a few months until you find something as far as work. Or beg your parents to spot you for 3 months rent.