Cadillac Repair: heating, digital speedometer, blower motor

Question
how do i get the heating to come out the vents

Answer
FIRST I need MAKE-MODEL-YEAR of vehicle.

SECOND, I need to know if you have an ANALOG or DIGITAL speedometer.

THIRD, I need to know if you are getting all the different speeds from the blower motor.

FOURTH, I need to know which vents do not operate when the heat is ON and when the AC is ON and if the defrosters work.

FIFTH, Does all the air ONLY come from the defrosters?.