Here's one, it's for running, but you can apply some of the same things to almost anything.

http://www.runnersworld.com/article/...0850-0,00.html

Here is kind of a more extreme example, but again some things can always be applied to other scenarios.

http://www.wikihow.com/Survive-a-Long-Fall

Then, kind of a funny one, but yeah...

http://www.videojug.com/expertanswer...ard-or-scooter

Like the last one says, although it sounds silly, don't be afraid of falling. Being tense when you fall only makes things worse. Just try to relax.

Edit: Found a bike specific one finally

http://www.ehow.com/how_13779_fall-mountain-bike.html