I found this one surfing around on YouTube watching Olympic lifting clips. It’s a pretty good demonstration of how to execute a proper power clean.
Don’t get me wrong, power cleans take a bit of practice to get the form right, but once you get it you will want to clean every day.
Power cleans help us with force development. By using Olympic exercises like this, you will train your central nervous system (CNS) to develop maximal force while recruiting all the muscles in the body to work as a single unit. Good stuff.