You have purchased a kitten or adult pet. In any case, it is advisable for the first time to limit the space for a new tenant to stay in the apartment.
Solve the problem of falling out of windows, install strong screens!
Living conditions for your kitten: a well-lit room without drafts, holes into which he can run away, but you cannot reach him.
He needs: a bed, bowls of water and food, a toilet with or without filler. Mesh filler to avoid contact. There are many cases of poisoning. If the kitten is confused and went out of the tray for the first time, then wet a piece of paper (napkin) in urine and put it in the tray. If the kitten hasn't gone to the toilet for one or two days, don't worry — it happens at the stage of getting to know the situation. Do not wear and do not let out in the rooms until you have fully accustomed to the tray !!!
Give the kitten a chance to sniff and look around. Be careful when meeting other animals. Since the situation is new for the kitten and it is difficult for him to immediately fit into it. If he's playing, play with him. If he does not make contact, he clogs, leave him alone, let him look around and get used to it, be patient. Sooner or later, he will definitely come out to you, want to eat and communicate. Usually the first stage of addiction lasts 2-3 days, and after a week he will completely master.