A four cylinder 600 cc sport bike is the worst machine for a beginner.
This question gets asked on a daily basis. High performance road racing motorcycles do not belong in the hands of a beginner. These are single purpose machines. They are not touring bikes, they are not commuter bikes, they are terrible bikes for a passenger. Their only purpose it to go incredibly fast with razor sharp handling and braking. Qualities that a beginner has no skill to control when they ease out the clutch for the first time.
Riding four wheelers has no bearing on ones ability to ride a two wheeler. Same with driving a car. Skills do not translate to riding skills.
Please read article below. Both are published by groups promoting sport bikes. Message is the same.
For a starter bike, take a look at a Suzuki DL-650 V-Strom. V-twin engine, upright seating and handlebars, small fairing and windshield, better passenger comfort, long travel suspension, available with ABS brakes, easy to install saddle bags and trunk, and a bullet proof engine. Insurance will be cheaper.
Sadly, most will ignore our suggestions based on years of riding. Experienced riders advise new riders to stay away from sport bikes, new riders are mesmerized by the squids doing stunts with these two wheeled missiles. Speed and power are intoxicating. Until your first crash. Then reality sets in. But for some, it is too late.
I read about a young girl buying a new 600 cc sport bike. Off she goes with her friends. 15 MINUTES later, at speeds approaching 100 mph, she encountered a situation where the lack of skill came into play, heavily crashed, and was air lifted to the nearest trauma center. 15 MINUTES of fun before her life changed forever. No skill translates into no experience, riding way beyond her abilities, and ends up heavily crashing. We the experienced riders don't desire this situation on any other rider.
Sign up for a rider course such as the Motorcycle Safety Foundation Basic Rider Course. Learn your skills the right way. And stay away from high performance sport bikes. And read articles below at least twice. Heed the messages. Could save your life.
Good Luck