I you use the Search box at the top left of the page and type in 'CPAN' you'll end up at a node titled 'perlman:lib:CPAN'. It provides an explanation about the Comprehensive Perl Archive Network. Installation instructions are included with each module.

You can also write your own modules if you choose. Just look in your Perl reference for more information.

--t. alex
but my friends call me T.