If you’re traveling with friends or family, renting a car can be an affordable way to see the country. But it’s also a challenging and sometimes overwhelming experience for first-time car rental customers. To make the process as simple and stress-free as possible, follow these five tips: Bring printouts of your online check-in reservations Make sure that the rental car has an emergency kit: First aid kit Fire extinguisher Documents for the car This is especially important if you are renting a car with someone who feels less confident behind the wheel. Most car rental companies will allow you to improve the safety and luxury features of your rented car…