Visit http://www.askthehardwareguy.com for more do it yourself projects. I replace a single pole wall switch with a dimmer switch. Always turn off the breaker or remove the fuse to any electrical project.
A single pole switch is the most common wall switch. It is just a break in the hot wire going to a light, outlet or appliance from one location. This is an easy do it yourself project.
I show a couple types of connections you could find when changing a wall switch.
Always turn off the breaker or remove the fuse to the switch.