IF आप already have an older cat in the house दिखाना him/her that he/she is superior to the kitten. If this does not happen the older cat will grow to hate the kitten.
बिल्ली के बच्चे प्यार attention and want as much as possible but if the older cat is in the room, आप must pay attention to the older cat. Even if आप want to pet the kitten आप must pay attention to the cat.
बिल्ली के बच्चे don't need as much खाना as older बिल्ली so आप really only have to feed them when आप have meal times.
बिल्ली के बच्चे are very entergetic animal so आप can not keep them capitve in your arms, they will hurt themselves. Also keep anything off the floor that आप don't want broken. They tend to play with them.
I know this things because I myself have a kitten and cat. When they first saw each other they hissed and spit, but now they are best buds that only get on each others nerves sometimes ;D