by putting flashlight towards your eyes
Watch videos on the web, don't give up!
You can't because you are a retarded assh0le that never got a f0cking job!
Add a flasher or blinker light to the set usually at the beginning of the strand. This may not work however if the lights are wired parallel .
You have to know actionscript. Go to Newgrounds.com for some actionscript tutorials.