http://learn.perl.org/library/beginning_perl

"Beginning Perl is a different kind of Perl book. It's written particularly with the beginning programmer in mind, but it doesn't treat you like an idiot, and experienced programmers will not feel patronised. It covers a lot of ground, from the very basics of programming, right through to developing CGI applications for the web. More importantly, it emphasises good Perl practice, and readable and maintainable code."