other than the perl resource mentioned by others, here are some realted to bioinformatics, the number one resource is Bioperl rest are:

Jason Stajich's Bioperl tutorial

Beginner’s HOWTO by Brian Osborne & James Thompson

bptutorial

Pasteur Institute Bioperl tutorial

WIBR Bioinformatics and Research Computing

few artices from perl.com by James D. Tisdall

Beginning Bioinformatics

Parsing Protein Domains with Perl

A Chromosome at a Time with Perl, Part 1

A Chromosome at a Time with Perl, Part 2

Oreilly books on Bio

Beginning Perl for Bioinformatics

Mastering Perl for Bioinformatics

I would have pointed you out to this page from perlchina.org, where i got the info from. but that webpage is in chinese :)

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