I was 15.5 when I started my in-car lessons, and I was only nervous for the first one because it was the first time behind the wheel, naturally you are going to be worried of dangerous acts/driving, you've never done it before, you don't know what to expect. Now, about 4 months later, I am very confident when driving. 16 is a prime age for it, too, as you don't have too many obligations to worry about (18 years of age and up) and you are already done making that transition to High School (14 and 15 year-olds).