In the world of art, a picture can paint a thousand words. In the world of computing a good example does much the same thing.
The Perl Cookbook is a superb collection of coding snippets which cover all manner of subject areas in a fashion that proves suitable for beginners and established programmers alike. From date formatting and text searching to socket programming and creating Internet services, it's all here and each is a little gem.
Authors Tom Christiansen and Nathan Torkington have done a sterling job of documenting each code snippet through explanatory text and in-line comments which goes a long way to helping the casual user understand what is going on and more importantly, how and why.
As a volume in its own right, the Cookbook is an essential desktop reference for anyone with an interest in programming the language, but combined with O'Reilly's other weighty Perl tomes--Learning Perl, Programming Perl and Advanced Perl Programming--it forms the final piece in one of the most thorough and comprehensive documentation sets for any programming language.