I've learned a couple of things about job hunting since I've started the process. Hopefully this information will be helpful to other first time part-time job hunters.
If you're rude to the person who is interviewing you, you're not going to get the job. Saying "please" and "thank you" is dying out, but you must be saying them when you're trying to get hired. Stand up when the interviewer walks into the room, and don't be on your phone at any point during the process.
There is no reason to lie to your future employer. If you don't have experience in something, that's fine! Admit it and say you'd like to learn that. Or explain how your other experiences help you with that skill. For example, I have never taken an order for a party of twelve, but I have dealt with a room full of preschoolers. Both require patience and multitasking skills.
Make sure you ask your interviewer questions. While they may be looking to see if you are a good fit for them, you need to make sure you want to work for them. Why is this place hiring, anyways?
If you're anyone but yourself in an interview, you'll come across as really fake. Put on your best face, but don't put on an artificial one. This sort of goes along with "be honest", but it's more than that. Don't try to become the person you think the interviewer wants you to be. Be yourself, and if you're the right fit for the job, it will become clear to both of you.