1917_1911M did a great job with that document; there's a ton of useful information in there.
1slickAR15, if you get the money for one, I recommend getting one. They're great fun and super cheap to shoot all day long. Some of them jam sometimes but it can generally be corrected. I've found that jamming, failure to feed and stovepipes are usually caused by one of three things that are pretty common with these pistols:
1. Just being too dirty. Lots of people don't clean their 22 caliber firearms as much as they clean other weapons for some reason. Most 22 ammo is pretty dirty to begin with so you end up with a lot of fouling from the burning powder that can slow up the action
2. Cheap ammo. Aside from being even dirtier than other 22 ammo (cheap ammo builds up carbon fouling extra fast), you often get inconsistent (or consistently weak) loads. This is particularly the case with bulk ammo like Remington Golden Bullets. In some lots, you can shoot a magazine of ammo and actually hear the difference in what the shots sound like (pop, bang, POP, pffft, POP, etc.). Spending a few extra bucks on ammo can clear up a lot of problems.
3. Not holding the pistol firmly enough. I've found the P22 to be especially sensitive to "limp wristing" it, which can cause a lot of stovepipes. I had that problem when I first got mine. Maybe it's because it's such a little gun that you think it's delicate or something and don't hold it firmly enough. "Limp wristing" it causes the slide and action not to cycle properly and can cause it to jam.
Give it another shot with that stuff in mind and you should have a lot of fun with a P22.