If you are interested in working on Perl 5 please review the following documents.
perlhack - How to hack at the Perl internals
This document attempts to explain how Perl development takes place, and ends with some suggestions for people wanting to become bona fide porters.
perlrepository - Using the Perl source repository
This document explains where to find the source code of Perl 5, the basics of using Git to access it, and how to submit patches.
P5P FAQ
This document answers some FAQ about the Perl 5 Porters (commonly named P5P), the group of people and mailing list that take an interest in the development of Perl 5.
