Are there any good resources on qualifying out there?

I understand it relatively well, but want to know more about the ideas behind it. Also ways to get girls to qualify themselves.

One thing I really don't understand though is qualifying yourself - bragging etc. is obviously a bad thing as you are trying to qualify yourself with her. However, exactly how far should you go with this? Should you hide everything impressive about yourself, or should you try and slip it in "accidentally"? This is probably my biggest weakness..

Also - thanks everyone for making seddit so amazing, I've been lurking for a while and it's awesome and has changed me a lot.