ISO Max Extreme Gainer?

So im 15 years old that workout alot and does Tae Kwon Do Black Belt. And I want to do the P90X program, I already did Insanity well just like half of it last year. Though this time I have a friend who workouts out with me now so he is going to help motivate me to finish this program. So Back to the ISO Max Extreme Gainer Question how many scoops of this stuff should I take a day. I weigh 155 pounds.