Welcome and congrats! You've picked a great first bike.
Get off on the right foot... go out and take the MSF course, invest in good gear and wear it, ride smart and adopt a safety mindset. That'll help to make sure you're around for a long, long time, enjoying this great sport.
It'll also impress the hell out of your parents. Here's a cool double-secret tip: Take the course WITH one or both of your parents. It's a hoot, a great way to spend a day as a family and it'll give them confidence that it's not as dangerous as they imagine.
Meanwhile, for your viewing pleasure... this surprisingly entertaining video.
Link to original page on YouTube.