How to jailbreak my sprint iphone 4?

I've been hearing a lot about jailbreaking an iphone and i would like to try it out for myself. If anyone one can please answer with exact instruction on how to jailbreak my phone. I've tried looking on google and youtube but its all just leading me in circles.

On IOS 5.1.1, http://www.redmondpie.com/absinthe-jailbreak-ios-5.1.1-untethered-available-for-download-now/

Lots of jailbreak tools available for iPhone 4 such as green-poison, ultra-snow etc. But I want to suggest you best, fast and easy usable jail-breaking tool is Red sn0w.
http://www.redsn0w-download.com/redsn0w-jailbreak-0910b5-how-to/