I purchased plans for the person last year, and I'm finally getting to building the CNC.
I ended up using some ideas from his gantry system, and some of my own ideas. So a hybrid, but since then He has added some nice video's on wiring up your break out board and motors.
I think it's a very nice illustration. I'm a very visual person so it really helped me out. I normally struggle a bit with written instructions.
Anyways, I thought you newbies might light it also.
http://buildyourcnc.com/wiring.aspx
P.S. Can anyone tell what brand the components are? He seems to only sell the unit as a kit, and if you already have the motors there is no option to get the other parts seperate.