You are looking at a very old, but free version of the course.
If you are interesed the most recent version, check it out
on the Perl Maven site.
* Manually check out what does this server do.
* Turn the two example clients scripts into test using Test::More.
* Continoue and write more tests for this telnet server.
If you are interested in on-site trainings by the author, please
contact me directly.