CPAN, the "gateway to all things Perl," stands for the Comprehensive Perl Archive Network, a Web site that houses all the free Perl material you will ever need, including documentation, FAQs, modules and scripts, binary distributions and source code, and announcements. CPAN is mirrored all over the world, and you can find the nearest mirror at
CPAN is the place you will go to if you want to find modules to help you with your work. The CPAN search engine will let you find modules under a large number of categories. Modules are discussed in Chapter 12, "Modularize It, Package It, and Send It to the Library!"