There are many types of collars on the market, making decisions difficult. We recommend that kittens wear break-away styles. A collar should be no tighter than to allow two fingers between neck and collar. If you are going to walk your kitten we recommend a harness style collar. This prevents choking and gives you better control of your kitten's body.
Kittens are easy potty trainers.
Instinctively a cat likes to go in a litter box. You will only have to show them once or twice before they know to go in the litter box. It makes clean-up easier. The litter box should be cleaned daily with a sifter. The clumping litter should be completely replaced weekly.