I hand raised a 2wk old feral kitten for a while. If it is really young you may have to keep it warm at night still. I used a hot water bottle under an old towel inside an esky - it kept it so nice and warm in there - Chewy loved it! It wont be eating any food yet either and will need to be syringe fed with milk. I used a 20ml syringe and got a special cat teat from the vet for $2. I used the milk powder we use for the poddy lambs, and that worked fine. When it was 5wks old I brought the tetra pak kitten milk. One thing that you're going to hate is that really young kittens can't poo or wee on their own yet so depending on the age of your kitten you may need to help it along. To do this (and I wish I never knew how to do this iether LOL) is to rub a wet cloth or paper towel around it's anus to mimic the cleaning of the mother cat, becuase the mother licking their anus stimilates them to urinate/defecate. It's not pretty, but necessary otherwise they can run into all sorts of trouble. But if the kitten is old enough to do that on it's own then you dont need to do it and can start with house training right away. They can't be wormed till they are a fair bit older as well unfortunately. But despite the PITA that hand rearing was, Chewy is a gorgeous cat now - still feral as anything, but we rehomed her with Mum and she loves it with them.