First pick a weight, 165lbs, 225lbs & 315lbs. The idea is to do as many reps of your chosen weight within the eight sets. Trust me this is way harder than it sounds.
By the end you will be a ball of pain and sweat, but you just gotta love it. You could pick your own weight but you want it to be challenging.
165lbs = Amateur
225lbs = intermediate
315lbs = Professional strength athletes.
Me personally, I am recording 70 reps at 225lbs, which is actually pretty ordinary.