Just remember, don't think you're a hopeless cracker if you can't crack an app on the first try. Believe me after staring at the same bit of code in macsbug for six hours can muddle the brain a bit. I've often found that if I just go do something else (like sleep ;->) and come back I'll notice something that I hadn't seen before.
Also although most people wouldn't consider cracker's the most honest people of the world =) The only reason I crack an app is either to see if I can do it or if there was no way in hell I could afford $600 for that development environment (or $50 for that game - thats two months of food for a starving college student!). Therefore if you use a program regularly and probably <could> scrounge up enough money to pay for it, DO IT! Especially in the case of shareware since all the money goes directly to the guy who put his blood, sweat and tears into it, not some stupid-ass company executive. This includes the tools in this kit - you'll realize yourself how worth the money they are.
