When and what should I feed my cats kittens?

Hi, to get them to drink on their own, at about 4 or 5 weeks, buy kitty milk in the grocery store. It won't give them diarrhea as regular milk will. Put it in a low bowl and tilt their nose to it until they start on their own. It make take a few tries, but eventually they will learn. The earlier they learn, the better. They will also use a litter box very early. Solid foods come after they drink on their own, use a moist food or can food. Oh, and they will like it warmed up a little, careful not to make it too hot.