and noticed that Perl (5 and 6) are missing.

I don't think they are :)

Remember -:: The state of Perl ScreenCasts ::-?

If you feel perl5-6 aren't represented on this (yet another unpopular website), volunteer to copy/paste from the dozens available :) Perl Tutorial Hub Learn to Spot a Good Tutorial

What is the best way to master perl and Where and how to start learning Perl , Modern Perl, Learn Perl in about 2 hours 30 minutes, perl 5, perl 6, http://rosettacode.org/wiki/Perl, http://www.ignition-training.com/booklets/perldistilled.pdf (backed up on http://coralcdn.org/)