Advent Calendar Do You Start With 1 Or 24

Advent Calendar Do You Start With 1 Or 24. Are you confused about when to start your advent calendar? When opening an advent calendar, do you start with number 1 or 24?

I’ll add that the lego advent calendars do tend to “ramp up” or “save the better/best” for the higher numbered doors, so i’d recommend. How does an advent calendar work?