Gears - Learning to build

Hello there, I did a quick tutorial on how to model gears in blender. It was pretty easy, the next step is learning to give them relational functionality. I found a good tutorial on how to add constraints and make the rotate together as well as defining ratios. That will be the next step. Here is the link for the gear build tutorial.

http://glupor.blogspot.com.au/2012/06/blender-tutorial-1-making-cogs.html

Here is an image of the cogs I built.