you start off running forward, then you stop running forward, and jump....as soon as you jump you turn left with your mouse and strafe left, and then as soon as you land you have to jump again (this is why people use mousewheel). For the second jump you turn your mouse and strafe right....rinse and repeat. The value of bunny hopping is to get somewhere fast, or to dodge shots...watch brawwr from GG in one of his matches to see what I feel is the best bunnyhopping ever.