EXPERIMENT 1
As a first exercise, let's create a connection from a switch to an LED.
Choose the Metal tool from the toolbar and use the mouse to draw a line
from the contact pad next to one of the switches over to one next to an
LED on the other side.
You can hold down the Shift key while you
drag to help you draw a straight line. If you make a mistake, you can
hold down the Alt/Option key and click again to remove metal.
When you've made the connection, flip the switch and watch the LED turn on and off.
