HI there,
So , the specs on those are * Micro Vibration Motor Rated Voltage: DC 3V; Rated Speed: 12000 RPM, If you just need one, Yes add a Series resistor to limit the current from the GPIO pin and try not to use any of the strapping pins (D0-D2),Try A3 or A4.
If you want more finite control do as @reivilo suggest and look into the controller driver.
Also look at some of the others available, the physical shape is also variable Flat (coin) or Cylinder.
HTH
GL 
PJ 