This Instructable is layed out assuming that you know jack-didly about knife throwing.
You may ask yourself, "Why do I need to learn to throw knives?"
Well that's a good question, but the answere is even better...
What if the fall of western civilization knocks on your door tommorrow?
What if zombies.... Okay I'm just joking. (But it could happen ;) )
A good reason to take the time to learn this art is simply because it's fun. Remember when you were a kid learning to play poker for the first time? What about chess? Any game like that really. Why do we play those games? How do they intertain us?
They're a challange. It makes you think about what you're doing, what you want to happen, and why it did or did not happen.
Not to mention that you'll be able to cleave razor sharp shinny things through the air when you're done. (And actually hit what you where aiming at)