I know that I will sound like a "wanna be" mod, but whatev, there isnt need for you to post the same queestion in two different categories.
That being said, there are a bunch of places where you can learn them, Richard Z has a one card twirl tutorial floating around the media in theory11, also, Garry A. posted a tutorial to a move similar to firefly by huron, they are both free so you could check those out.