Here are the steps to install a light switch:

1. Turn off all power at the circuit breaker before beginning any wiring project.
2. Remove the switch plate by twisting its visible screws counterclockwise.
3. Test for current.
4. Remove the old switch.
5. Inspect and disconnect wiring.
6. Prepare wires.
7. Install new switch.
8. Replace the switch cover.

After installing the new switch, screw the switch and switch plate back on the electrical box.

I hope this helps! Let me know if you have any other questions or if there's anything else I can help you with.