LED & Buzzer
LED anode (long leg) to leg 0.. Short leg (cathode) to GND.. Buzzer anode (long leg) to leg 3. Short leg (cathode) to GND. Touch leg 0 and GND at the same time to switch on the LED and Buzzer. Let go of leg 0 or GND and the LED & Buzzer go off. It seems easier to understand the "turn leg on" and connecting the LED to GND than the "set leg to 0" and connecting the LED to PWR that is covered in one of the tutorials.