I don’t know where to start.
Start with perl and (especially) perlintro. Then tackle the two central Perl topics: references in perlreftut, and regular expressions in perlrequick and perlretut.
Also take the time to read through the FAQs — not for close study (at first), but to get an overview of the various questions and topics that arise in learning Perl.
You will want to follow up perlreftut with perldsc and perllol. Also study perltrap to learn the common pitfalls. After all that, you can safely pick and choose as your interests and needs direct :-)
Hope that helps,
Athanasius <°(((>< contra mundum