Totally agree with all who propose the 22LR. Cheap round, lots of practice, low recoil, cheap(er) gun usually, quiet. Get the proper technique, control down pat as handguns are different from long arms. Once you get comfortable, then think 9 mm, 45 ACP etc for later. Better to hit your target with a 22 then hit the pavement with a 45! Enjoy your future gun and be safe!