Please, Please, Please do not bring this little 6 week old puppy home now. It is WAY TOO YOUNG to go to a new home. Puppies this age need constant supervision if they don't have a momma, they need to be kept warm and safe and need fed every couple of hours. I have raised a litter of 5 puppies from 5 weeks on when their mom had eclampsia and it is very hard to do, I can't imagine trying to do this when you have to work and have never even had a puppy before.
This is NOT a safe situation for this little one. Please for the sake of the puppy - leave her at the breeders. Raising this puppy until it is older is the breeders responsiblity not yours!!! I can't believe the breeder would even consider letting a puppy go this young.
This puppy should be at least 12 weeks old before it comes to your home, for the sake of all involved please wait until then to get your baby, it will be better for all involved, especially for the puppy. Good luck,
Teresa