Blues_O_Malley, as this is your first, let me echo what others have said and welcome you to TFL and hope that you stick around on a regular bases. To borrow something said to me by TheBluesMan, membership in TFL costs members nothing and it has industry leaders, certified trainers, police, military, newbies, and everything in between; even a curmudgeon or two. Members are located all across the planet and can share ideas, opinions, experiences, successes, failures, and even jokes -- a really amazing place to hang out on the internet.
That said, let me makes some comments with regard to the PPK. First, you need to ask yourself why you really want to buy this gun. If this is your dream gun (
everyone should have a 'dream gun' or two or three or a dozen) and you are buying it just for fun, I would suggest that you get the .22LR. .22LR ammo is far cheaper to shoot than .32 or .380 by a factor of three or four times (or more) and everybody's first gun should be a .22LR -- the recoil is as mild as you can get making it a lot funner to shoot when you're first starting out.
If, on the other hand, you are buying this gun for concealment/self defense, then I would suggest that you may want to consider other alternatives to the PPK. For example, Kahr has a pistol called the MK9 which is almost the same size as the PPK but which shoots the more powerful 9mm-Parabellum. They also have an MK40 model, which is the same size as the MK9 but shoots a .40S&W -- however, I feel that that is too powerful a round to shoot accurately out of such a small gun.
I realize that some countries in Europe still use a .32 to protect their boarders but for self defense purposes, I would recommend something with greater
stopping power. This is not to say the a .32 (or even a .22LR) can not kill. It can and it can kill very quickly but killing and stopping are not always the same thing.
I'm reminded of a story that I posted here once before about a woman who shot her attacker with five rounds of .25ACP. Within less than five minutes he was dead. However, before he died, he strangled her to death as well. A bullet that hit him in the leg killed him and it killed him quickly but it did not stop him. That's the difference.
For self defense purposes, you want something with high
stopping power. If you still want the PPK for concealment/self defense, then definitely get the .380ACP since out of all the calibers offered, this has the best
stopping power.
Share what you know, learn what you don't -- FUD