Kevlar lined tires do get way fewer flats than regular tires. Of course ANY tire will flat if a sharp piece of glass hits it in just the right way.

But yes, a beginner would do well to get Kevlar type flat-resistant tires- they will definitely help you get LESS flats.
If you arre actually racing you wouldn't want Kevlar tires as they are just a bit heavier because of the lining. Not hugely heavier, mind you....nothing that would slow you down much in recreational riding at all.