Having never owned before I would suggest you find a place you can rent one and go shoot it. Once you find a place, shoot several different guns and find one you are comfortable with.
There are way too many choices out there and way to many variables. How big is your hand, how strong are you, how many rounds do you want to carry, are you concealed carrying it? How much do you want spend?
Guns are like cars, they make a million different ones for anyone who could ever want one. I used to own an LC9 and it wasn't my favorite gun, but the guy I sold it too loves it. I wasn't a Glock guy, but when I shot the 43 I had to get one. Just my 2 cents.