Go online to any of the major companies that you see in ads: Geico, Progressive, Allstate, Farmers, State Farm. You plug in your info & they email you a quote for the type of vehicle & coverage you want/need. Or just look up some local agents & call them.
Hopefully you didn't already buy a bike as insurance for a guy your age is Expen$$$$ive, especially on a sport bike.
If you took & passed a safety course (msf-usa.org I believe is their website) you do at least get a discount.
After pricing insurance you may realize another reason why most experienced riders may advise against you getting a sportbike yet. Don't sweat, there are some great bikes out there that are easier to insure: Suzuki Gladius, GSX650F, Kawi er6n, Ninja 650R, Yam FZ6. And that's just the new ones.