Installing a dimmer switch can add great ambiance to a room. To start, make sure you turn off the power at the circuit breaker. After that, remove the old switch cover and unscrew the existing switch. Wire the new dimmer according to the instructions in the package; usually, it involves connecting the wires with wire nuts. Finally, secure the dimmer to the wall and attach the cover plate. Are you comfortable working with electrical wiring, or would you like tips on ensuring safety during the installation?