http://www.youtube.com/watch?v=UMvS-eE3-44
An easy way to add a bonus is by buying up resale rights. I am strongly against offering resale rights unless you want some quick money, but I am always on the lookout for new resale rights products in my niche. If I see a resale rights product that complements my existing product, and the terms state that it can be packaged as a bonus, chances are I will snatch it up and add it to my existing offer, if it fits.
Another easy...