My heater/AC blower stopped blowing air. How do I fix it?

first,test the fuse for the blower motor and make sure it's not blown.then you could test to see if you are getting power to the blower motor connector at the blower motor with the key on and fan on.if you have power there,then suspect the $200.00 blower motor is bad.i doubt the resistor is burnt because you have no speeds..if that was burnt,the blower motor would default to high speed only.