How do you set ride height?

[noteron]

OK fellas I need your help. Im trying to build a 67 swb stepside. I bought a Big window cab this weekend from 68Mike (Thanks Mike!) and he threw in a swb frame. Id like to start cutting it up. My goal is to Bag it, Drag it & Lay it out in the weeds when its parked. Now I've read alot on here about ride height, but no one has really explained so that us simpleton's could follow along and possibly duplicate the process. How and Where do you measure? I want to be able drive it home if I encounter parts failure. So Im guessing that will dictate my ride height. Any and all info would be greatly appreciated. Thanks ahead of time.