Click on the video, its quite amusing and while much of it is tounge in cheek its pretty well dead on. Its even more funny if you are a swinger.
http://www.lifestylelounge.com/
TFP has a number of swingers but your questions are not really specific enough for anything beyond general answers. I'd recomend
www.theswingersboard.com for more general information.
One quick side note. If you are not in a very strong and mature relationship I wouldn't touch swinging, its going to be a disaster.