Do you even have theory tests in the US? With ours you have to understand the environmental affects of your car, hazard perception, how to service your car, etc.
Perhaps you should order these videos so you’ll be much more confident for your road test: http://preview.tinyurl.com/Driving123
The videos go over everything you should know for driving tests. Even though it costs some money, in the long run you’d be glad that you ordered them. It sure beats failing!