Comfort and Convenience
Preferred cabin temperature is a good example: two people of similar build often settle on different settings, because comfort depends on clothing, how recently someone was outdoors, and personal sensitivity rather than any single correct number.
Safety and Driver Assistance
Learning where the main controls sit while parked means fewer searching glances later. Lights, wipers and demisting are worth locating in advance, since weather can change before there is a convenient moment to look.
Multimedia and Connectivity
Keeping a phone charged during long journeys is a practical need in itself, separate from playing music or taking calls. If charging is available on board, cable type and socket placement decide how usable it is.