He should take some time and read through the scientific data provided on that site. It will also break down or help him calculate what is best for his bf% to help him get to his goals. Or like so many other bodybuilders he can rely on common knowledge. However, like SC said, he has used the method's he described and had great success. So, it is not hard, just pick a way and roll with it. In the end it will be determination and his will to succeed that will separate him from his competitors. That is what I love about bodybuilding. There are several ways and options of getting there. It is in the end all up to you. Peace