The biggest and most helpful resource for any perl programmer independent of experience is perldoc. The more time you spend there and are familiar with all of the faqs and documentation, the better off you'll be.

The second resource you'll need is cpan for all of the code provided by other perl experts for use by others.

After that, the best resources are subjective, as there are lots of books out there and some are favored more than others depending on the programmer. If you're looking for ways to have good style, then I might suggestion Damian Conway's Perl Best Practices book. It's been out a while, but definitely stilly has some good tips.

Good luck,

- Miller