Leather care

Hello! I have a question about the care and cleaning of the leather. I have already read soooo a lot. Only what this already too much and now I don’t even look through. Amor All, Lexol etc My cow (BJ 2012 22tkm) has leather on the dashboard, door panels, arm rack, shift knob and the seats are in partial leather (Alcantara) and of course steering wheel Now my questions: 1) How do you clean and maintain your leather faucet board or door panels etc.? – with Amor All leather care towels? 2) How do you “grease” your steering wheel? I have pretty dry / rough hands. 3) Seats in partial leather. How do I best care for “folding” to avoid / prevent (sitzwangen) Thank you in advance !!