When will I be able to sell the puppies my dog just had yesterday? How long do they have to be with the mama?

The best time for puppies to go to their new homes is 7-8 weeks, never before 6 weeks.

Almost any dog book quotes from the work of Scott and Pfaffenbuger and their studies of early socialization. Why are you breeding dogs when you haven't educated yourself on this and a thousand other important things needed to produce quality dogs? I don't see how anybody can be unaware or not care that we are slaughtering millions of dogs for lack of homes. There are several of us here so upset about it, we find it difficult to compose civil responses to questions sounding like somebody is part of the problem.
It is tough to speak out on this issue without being rude.

You will find a short cut to some of what you need to know at Woodhaven Labradors Articles (http://www.woodhavenlabs.com/articles.html#breeding)

Definitely not before 6 weeks.

Even pure breed dogs get slaughtered everyday, for lack of homes. Labman is right how can a breeder that has not done their homework, be breeding for the good of the breed. Having AKC papers on a dog does not mean it should be breed. There are more ways in this world to make money. Using a dog to line ones wallet is inexcusable. Go on petfinder.com and see how many of the breed that your planning on selling is listed there. Also consult a vet on how to properly take care of puppies, when they should be weaned, what puppy food to start them on, when they should start eating solid food, vaccinations, parvo, worms, spaying /neutering, fleas, finding fit forever homes. There are many things that must be done for these helpless creatures before selling them.