There is a good tutorial on www.bowsite.com that covers how to "grip" a bow. It's in the "Faetures", Practical Bowhunting section. Has pictures and everything.

I think I have to make a comment about the No-Peep. The No-Peep does not help you not torque a bow due to a tight grip. All it does is show whether you are torquing, or not anchoring right. If you are gripping a bow and the No-Peep doesn't line up you can just add more torque to align the No-Peep so the circles line up. It doesn nothing to reduce the torque itself.

And rest assured, if your hand contacts the bow there is always going to be a certin amount of torque involved. The idea is to eliminate as much as possible and be very very consistent.