Congrats on the new job. I know you will do well. Just remember that a customer's anger is not personal to you. Some people are just rude and others are just having bad days. Feel sorry for them. Plaster a smile on your face and use the tips from some of the above posts. I worked retail for a long time and apologizing even though you haven't done anything works wonders.

Again, remember, don't internalize their anger. It's not about you, it's their issue. And it's your store, so if they get too out of hand, you can ask them to leave as a last resort. A very last resort, of course.

And if you get a ranting customer, focus on something silly about them in your mind to keep yourself amused and from getting to upset. Say, if they have bad hair, think about that while you are talking to them. It helps.

It's just your job, not personal. Remember that! Good luck!