2 (connect your robot to your computer via usb cable)
4 (in arduino ide, open pushbutton.ino)
5 (hit the upload button)
7 or go to the menu item tools, and down to serial monitor)
8 (in the bottom right, select "9600 baud")
9 (connect the breadboard and pushbutton as shown in "pushed.jpg")
10 (hit the upload button in the arduino ide)
12 (the message "button state changed!" should appear,
13 and the arduino's built in LED should light up)