Encase this isn't a troll, even though I feel it is. I'll post what I know from raising Upendi. She came to me at the tender age of four weeks. Mom was attacking the pups...quite literally and it was either with me or to the pound as the people were clueless.
Aaanyways, I got a good quality puppy food and I did mix in a little milk replacer, but only for about the first week. It's very important to make sure your pup doesn't get too cold or too hot as they aren't very good at regulating body temperatures yet at that age. I would also keep the pup away from any dogs unless you know for a fact that they are healthy and vaccinated. If at all possible and I can't stress this enough you should arrange 'playdates' with other members of the pups litter. The lessons they learn from each other are so so important. Trust me on that one, I had one hell of a time teaching Upendi bite inhibition...