If you are feeling motivated enough to run the example code, then by all
means do.
$ wget http://sirsasana.org/training/perl/handson.zip
and hack away.
Long live source code!
Or to put it differently with a twist.
"May the source always be with you."
Obviously I stole this from a BSD wallpaper from
http://bsdnexus.com
Have a great day!
-Girish