Like Meredeth and others have said, there is a lot of valuable information here, thanks to the experience and intelligence of our members.
Thinking of breeding? The link Noriko gave you is good, and I reccommend you read this as well:
There are also some very real health risks associated with breeding. Are you prepared for the possibility of losing the entire litter and mom as well? It happens. It takes a lot of work to be a responsible breeder, any anyone who can't do all it takes to be responsible is harming the breed.
In any case, welcome, and I hope you enjoy your stay.