Read it a couple of times, then let us know what you don't understand.
It's intended to be step-by-step, but not to be a "blindly type this without understanding" recipe because we reckon that it's not good to modify software like this without some knowledge of what you are doing. But if you can work out what each step is about, the whole lot comes together.
The "unrevoked" method has fewer steps, but "revolutionary" gives you more options.