I wouldn't suggest a sport bike as a first bike at all.
Get a small bike (non crotch rocket). Learn the proper way.
Learn the rules of stopping and and maneuvering. Plus its easier to take your license test on a non sport bike.
I learned the hard way on a GSXR 600. And withing the first week had dropped the bike from doing the simplest thing like mounting it or moving it. lack of experience also let me into a crash that now would never happen after learning more.
Get a riding book. A good one is call "A Twist Of The Wrist II"
It teaches you from everything like staying in lane, both brake usage, to finding your apex in turn.
And ALWAYS wear your helmet. NOT a stupid small ones that barely cover your head. Get full face and wear it all the time. Get used to it all the time hot or cold.
All bikes are fast. How fast you talking about. When you can out ride your bike then you can worry about speed. Until then get a small manageable bike.
Believe me you don't want to be on a highway in traffic get a little nervous yank on your clutch, gun the throttle (actually trying to release throttle and grab brakes). Once the engine revved high you will freak and release clutch and you can have an "ouchie in no time". Happened to me, but I didn't crash. It scared the beans out of me.
Your gonna have to learn hand foot coordination, using BOTH brakes all the time, finding out what your engine sounds like at 30mph different gears for town driving...etc.
IMHO I think power is the worst thing you need when learning. My gauge and skill level grew the more I rode. But I made the mistake of following the wrong biker buddies and I am sure you have them too, who had me doing 135 within few weeks. Safe NO, STUPID yes. Did I know better NO. Now I do. And Although my new bike has been garaged for some time now, I have not yet passed 90 with it. There is simply no need to.
Take your time and learn the right way, don't get road rash faster than you need to (never) or worse, because of lack of experience.
Good Luck and Be Safe.
My crash was at about 60mph and I was braking as hard I knew how at the time. This turn was under a over pass and sweeped left and descended slightly. I wasn't wearing my leathers (stupid) at the time, because I went on date, but was wearing my helmet. I panicked and locked the back brake and didn't squeeze the front brake enough, plus I did NOT lean her in for the turn enough. So instead she stood up and I hit the wall. Last thing I saw was pavement sliding past my face as I skidded on my head. I was able to walk away (somehow) with just severe road rash. Lucky me. The other option was broken bones and death!
NOW that would never happen. i would sooner lay her down before I hit that wall, But better yet the turn would be no issue what so ever.
I wear leather jacket, gloves with Kevlar knuckles, denim pants, steel toed boots and full face helmet of course all th time. Hot or cold make it your second skin, even better a riding suit.