There are many books by many great authors available to help you learn Perl. A couple widely recommended (and for good reason) titles are Higher Order Perl by Dominus and Modern Perl by chromatic.
There are also many web resources available, many reams of code on CPAN, plus the rest of us monks on this site to help you when you have questions.
Perl6, as you recognize, is a separate project based on Perl5. It is an evolving language, and if you want to help with that effort, start with the resources on http://perl6.org.
use strict; use warnings; omitted for brevity.