Is your goal really to just take your Perl skills to the next level? If so, then make sure you read all the O'Reilly books ( Programming Perl, Advanced Perl Programming, The Perl Cookbook, etc. ), read the Manning book on Object Oriented Perl, read professional Perl, read the most popular Perl from CPAN.

However, I personally think programmers who focus too much on one language become like a carpenter with only a hammer; Of course Perl is one extremely versitile hammer...

You are apparently studying either Comp Sci or Info Sys; My personal suggestion is to learn more about the art/craft/science of Software engineering. Everything you learn there will be applicable to employment, and will make your Perl skills stronger.

And while I am sure others are Gurus in the amount of time I have been programming Perl, seven years, I still find something to learn about Perl all the time; So enjoy the ride and just keep writing.