What are good sites to find a job, and what are some tips on how to act during an interview?

Have you tried looking? Use my strategy and go around to retail and restaurant locations that are in proximity to you and ask if they are hiring. If not, you can try monster.com or Google job search sites. As for interviews, you have to really want the job. Dress nicely and if you really care about this particular job your mind will put you in the right place. People like honesty so if you're committed you'll have a great chance of getting chosen simply because you'll naturally carry yourself as such.