I was 19... I was allowed to get it when I was 16, but I waited until 19. I was always afraid too... but now I think I'm an awesome driver. My bf on the other hand, is terrible. He thinks I'm a great driver too. Good luck with getting your license. You'll be fine.
I got my permit at 15 and then I got it re-newed like a month ago. I have yet to get my license.
I probably would have had mine by now, but money troubles and things like that got in my way. So I didn't care and bummed rides from friends. I would like to get mine soon, but I know i'm going to be nervous.