E., do you already have a drivers license from your home country? If yes, you don't need to get an Arizona drivers license. But if you don't have one... you need:
1. A learners permit. You will need to take a written test at the Department of Motor Vehicles. This permit allows you to practice driving with a licensed driver in the car.
2. A drivers license. Once you've learned how to drive, you will take a driving test at the DMV. You need to provide the car in which to take the test. It can be a friend's car. Also, you do not have to take a class. You can if that will help, but if a friend is willing to teach you to drive, you can do that.
3. A car. $2000 will not get you much of a car. If you buy from a used car dealer you might be able to get a loan and buy a better car. Get a small car - it will get better gas mileage. And make sure it has working air conditioning since you're in Arizona.
4. Car insurance. You need a drivers license before you can get this, and you need the insurance before you are allowed to buy the car.
You probably won't do car repairs yourself. Most people here don't. If you buy a car that is in good shape, you won't have many repairs in four years.
Good luck!