New Kitten (~4-5 weeks) owner looking for nutrition guidelines and rearing advice

Its always best to give them a milk supplement like from their own mother. Cows milk, if its straight from the cow is ok in small doses but if its been pasteurized its not so good for kitty and could cause anemia and dehydration. Try putting water in the dry food (kitten food preferably) so its a little mushy, if kitty can chew its great, if he just eats a little for now its ok, the water in the food will keep him hydrated. just watch him closely and make sure hes eating. If not your going to need to order a supplement. Good luck with kitty.