I'm not sure if the resistor complicates the circuit in a way that might render
a simple multimeter voltage reading at the motor insufficient.
Not exact matches
For the practical side of things buy a protoboard, a
multimeter and some components (resistors, capacitors, etc) and start mounting
simple circuits.
Then get a
simple «combo» tool (oscilloscope, signal generator, power supply, digital
multimeter) like the OpenScope MZ [1] or the Espotek Labrador [2].