Different Kicks

Where can I find a good explanation of different kicks? In the quest to find a good fine, I've often heard "this fin doesn't kick backward very good" or it isn't good for backing up. All this time I've been thinking, man, every fin I've tried I just kick in front of me and I go in reverse. Wrong. I just saw a video of actually swimming backwards and it is not even close to simply putting your fins in front and kicking. When in the world and why in the world would you ever need to kick backwards like this? Why wouldn't you just simply put your fins in front of you and kick backwards, isn't that much simpler than trying to keep your feet behind you and trying to make yourself backup? Thanks alot. I would love to find out about all the different kicks and stuff.

Mike