How to get a permit
If you’re a member of AAA, that is your easiest and cheapest route to getting an international driver’s license. I went to the nearest AAA office, filled out a form, showed my driver’s license, gave them two copies of a passport sized photo and paid $20. I walked out about 15 minutes later with a driving permit valid in about 150 countries worldwide.
If you don't have AAA, my suggestion would be to head to your local DMV and ask how you can apply for an international driver's license in your state.