Some kitten talk

Purring
Kittens can purr from when they are one week old and it is a sign of pleasure, usually when they are being petted or are totally contented and relaxed.

Meowing
This sound is made when the cat wants attention, for example, when he is hungry.

Hissing
If your kitten hisses softly at you, this is a warning to leave him alone. If you ignore this, he will hiss more loudly, and swing his tail from side to side aggressively. Pay attention to this, otherwise you may get scratched and bitten!

Kneading
Your kitten may stand on your lap or a soft surface and gently knead with his front paws. His claws may be out. This is a sign of contentment and goes back to the days when he was feeding from his mother.