Griffith Knives

I own a set of Throwing Knives but have no clue how to properly throw them. How am I supposed to hold them, what type of action do I use to throw them, etc? A web site with pictures on how to do this would be of great help.
Oh, and please no crappy sarcastic answers like “you throw them” and don’t copy-paste a wiki page if one exists. Thanks.

http://www.knifethrowing.info/grips.html, http://www.knifethrowing.info/how_to_throw_Knives.html

Hope that helps some. It’s got a picture and a diagram.