ok, you can get a voltmeter for $20 at Walmart or a parts store, so this is the less expensive route.
Both the blower motor and the resistor are located underneath the passenger side of the dash. You just have to access from lying on the passenger side floorboard and looking up behind the dash and you will see them. There is one connector for each, and the blower motor has 3 screws and the resistor has 2 screws holding each in. That is it- nothing to remove to access them.
Ok, first for the blower motor, you really dont need a voltmeter for it, but you will need a couple of 1-2' lengths of wiring with the ends stripped of the insulation. You will remove the blower motor(shown below) and use the 2 wires to hook one wire from the negative cable on the battery and one wire from the positive battery post. now touch each wire to the terminals on the blower motor. If it spins, then it is good. If not, then buy a new blower motor:
this shows the which terminal on blower is positive and which is negative:
when you look behind the dash, just to your left of the blower motor is the blower motor resistor. for this test, you remove the resistor, and you set the voltmeter to Ohms. you will test resistances between the terminals on the resistor and check against chart below. If not within the given specs, replace it.