In reply to puppythedog:
The kettlebell bible by Stan Pike is well worth the money, pretty much covers every benefit that you can get from kettlebells.
There are also loads of facebook groups worth a look, Mike Mahler's stuff is excellent.
I have been using them now for about 5 years, they arent the be all and end all like some people choose to market them but another useful tool to stay fit and strong.
Remember to take care of your hands, especially if you are a climber. Long snatching/swing sessions can be brutal on the palms.