I've been meaning to post this for ages.
One option, rather than buy a bike and find it not suitable (it's hard to judge as a new rider what you'll really like) may be to take a membership with
Spyder Club. Basically, for a fee about equivalent to a years depreciation you get access to a massive stable of bikes, from complete exotica like MV's and Panigale's to GS's, Nine T's, tyo more ordinary stuff like a range of Triumphs, BMW's, MT 07/09, etc etc.
I was a member for a few years despite having at that time over 10 bikes, because it gave me a change to try stuff like the
Ariel Ace, Norton Commando 961, MV F4, Bimota DB5 that I was unlikely to buy myself.
It's also run by some very nice people who will do their best to look after you.