Puppy and Dog Training Online

Where can I find an online guide on how to take care of my new pit bull puppy?

I just got a new male pit bull puppy a few days ago. I'm used to taking care of older puppies and dogs, but I've never had a puppy this young; it's only 5-6 weeks old. I need an online guide that contains as much info as possible on proper care of this puppy, such as the recommended diet for his age, tips on potty training, how to socialize well with people and other dogs, etc. I've tried searching on Google, but it gave me too many results I had to filter through, and I don't know which one is really legit. The other guides I've found don't really give any info on how to take care of a puppy this young. All the pictures show puppies that have already reached or passed one month.

The puppy is so fragile at this age that I'm afraid of doing anything wrong. I'm really not used to anything this young, so if you also have any additional tips to share please do so.

Thanks to everyone in advance!
The mother abandoned the litter, that's why it was given to me so young.

1) 5-6 weeks is TOO EARLY to be taking a puppy away from it mother and litter
2) Your breeder/shelter should have provided you with information about raising the puppy.

Try kennel club websites.
The puppy is gonna need to see the vet anyway for a wellness exam, so talk to them about what you should do for the puppy. A lot fo times vets give out "puppy kits" when people bring a new puppy in for a check up the first time.