Hi Ivette.

Welcome to perl!
I would try this site for additional help:

http://perl.about.com/cs/counterscripts/

or...

http://www.hotscripts.com/Perl/Scripts_and_Programs/Counters

I would also suggest you look at: Learning Perl 3rd. edition O'Reilly publishing
http://www.oreilly.com

Hope this helps,

Katie.