IF 당신 already have an older cat in the house show him/her that he/she is superior to the kitten. If this does not happen the older cat will grow to hate the kitten.
고양이 사랑 attention and want as much as possible but if the older cat is in the room, 당신 must pay attention to the older cat. Even if 당신 want to pet the kitten 당신 must pay attention to the cat.
고양이 don't need as much 음식 as older 고양이 so 당신 really only have to feed them when 당신 have meal times.
고양이 are very entergetic animal so 당신 can not keep them capitve in your arms, they will hurt themselves. Also keep anything off the floor that 당신 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