Open Question: How Much Would Insurance Be For A New 18Yr. Old Driver?

I just bought my first car ((Yey)) and at the moment I am 18. I turn 19 in a month and my car is a small 1991 Toyota Tercel. We talked to the insurance guy and they told my father & I that it's better if I am full owner of the car since if I do get into a crash it effects his insurance ((If I was under him as the owner of the car)). What am I looking at monthly?