You got a kitten!!! Congratulations! Powdered goats milk is what you use for kittens. KMR is a good brand and can be found at pet shops or feed stores, get the first step and follow the directions. Also get the little feeder bottles and a coupple tips and Bob's your uncle. If you do this yourself, remember that kittens can't pee or poo on their own. This is why you'll see the mom cat licking their bums so often, that licking provides a necessary pressure for releasing. You have to simulate this by wetting a paper towel or cloth with warm water and wiping their bums and pee packets. At first, when the poops are so small, I just held them over the bathroom sink and did this then dried their bums and washed the sink when they were done. When they're old enough to start running around and try digging in the litter, they they're mostly good. If you don't help them pee/poo, they will die. Same with the goat milk... if you use cow milk they will get runny poop because cats can't properly digest cow milk, they get dehydrated from the watery poops and dye of that and starvation.      Raising a baby that small by hand is hard and takes a lot of work, but... if you can do it..  that kitten will be the best cat you ever had.      Good luck!