Help figuring out electric motors
I was at one of my favorite stores yesterday, a place called 'Industrial Liquidators' here in San Diego, and I was looking at their vast supply of electric motors. Big ones, small ones, battery operated ones, flat one, all in latest styles and fashionable colors. I know of plenty of uses for these things but I have no idea what it is I'm looking at. I would like to make my own rock polishing tumbler, so I'd like a motor with a bit or power and a slow rotation, but how can I figure out how strong and fast a motor is?
Maybe I'm starting at the wrong place. I must admit that I know next to nothing about electrical stuff. Pretty much the only thing I know about electrical equipment is that it only works when you plug it into a socket.
So that being what it is, can anyone direct me to a website that explains how to read these motor labels? Ya know the ones that say how many ohms, volts, amps etc.
Thanks for any help.