Ask both of your parents if they would sign up and attend a firearms class with you. As a family, with your parents seeing what you learn & learning themselves. This is letting you learn with their supervision on such and important and scary thing & they would feel more confident about a decision. An Educated Decision.
An NRA class or home defence class - which would benefit your entire household. With them. It's a gun owning house now, enlighten your parents that you will be a future gun owner as soon as you'll be able & don't they want to do their job and make sure that you are educated & safe when you leave the nest? That they gave you the tools as responsible, caring parents to be a good, responsible well equipted adult.
Everything in their power!!!
Ask them if they would go with you as a family to a local gun club/range to learn about a membership & talk to some of those old coggers & range masters & just whatever members are in there at the time. Familiarity breeds comfort. You'll see other families, couples of all ages, Dad's bonding with their son's & daughters. Mom's too! Classes & instruction offered in a lot of these places.
These people are good and normal with a love and respect for firearms, safety and the law.
You can get your own membership to the NRA.
My husband & I wish our 18 yr old daughter would take more interest - it's a scary thing to send a beautiful, young woman out into the world (off to college) with nothing but a very little bit of common sense.
As a parent - crossing my fingures just isn't good enough.