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 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 Bill Hails
This book presents an informal and friendly introduction to some of the core ideas in modern computer science, using the programming language Perl as its vehicle. The book takes the form of a series of working interpreters for the language PScheme.
by Andrew Shitov - DeepText
This book covers many basic and in-depth topics of Perl and provides the initial knowledge you need to start working with Perl 6. The book does not require previous experience with Perl, although some general understanding of programming is assumed.
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.