Get a 12 volt test light ,any auto parts store sells them.
Blower is under the dash ,passenger side,close out insulator panel will need to be dropped for access.
Test for electrical power to the motor and also check for a good ground.
Check the fuse first .
What you can do to first if fuse is ok is to gain access to the blower motor,turn the ignition key to the on position.doesnt need to be running just to on,....turned on fan /blower switch to high setting ,then with your fist or a mallet give the motor a whack,if it starts working or makes any noise at all,its faulty.