Perl 5 Internals
by Simon Cozens
Publisher: NetThink 2001
This is a three-hour course which provides a hands-on introduction to how the perl interpreter works internally, how to go about testing and fixing bugs in the interpreter, and what the internals are likely to look like in the future of Perl, Perl 6.
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by Keith Bradnam, Ian Korf - Korf Lab
We have written a basic introductory course for biologists to learn the essential aspects of the Perl programming language. The course is very much aimed at people with no prior experience in either programming or Unix operating system.
by Nick Parlante - Stanford University
An introduction to the main features of the Perl language. It's intended for people who know some programming but need an introduction to Perl. Topics: scalar variables, strings, arrays, hash tables, file input and output, regular expressions, etc.
by Mark Jason Dominus - Morgan Kaufmann
Perl incorporates many advanced features that are not well understood and are rarely used by most Perl programmers, but they are very powerful. One of these techniques is writing functions that manufacture or modify other functions.
by Jonathan S. Duff, et al.
This book is primarily for people who want to learn Perl 6. It teaches the basics from a Perl 6 perspective, touching on variable interpolation, datastructure use, object construction, threads, closures, symbol tables, and other core features.