Don't use a debugger - think when something doesn't work. The feedback you get by thinking about your own code teaches you much faster than anything you get with compile/run/debug cycle.

"I think that without a debugger, you don't get into that mindset where you know how it behaves, and then you fix it from there. " http://linuxmafia.com/faq/Kernel/linus-im-a-bastard-speech.h...