(the Author has replaced the original content of this message with this other stuff)
Additions:
Okay, I felt guilty for giving this such a terse answer, which wasn't very helpful (IMHO). So here's a list of places I'd look for Perl info (by no means complete)--

At your fingertips on any machine with Perl installed:
perldoc: type in perldoc perl and behold the wonder.
Modules: core modules are already on your machine. Some of them are written in Perl. No one is going to stop you from looking at the source to these, just open your favorite *.pm file in emacs (or whatever editor you may have on hand) and see what it looks like when the masters write Perl. Just don't save any changes. :)

web-based stuff (largely repeats from Outside Links)

General Perl Knowledge

perl.com: O'Reilly sponsored Perl-only resource center.
ActiveState Perl Support: Not everything, but the core perldoc files are here as well as those for many modules. Especially good place to start if you are on Windows using ActiveState Perl.
Web Developer's Virtual Library: Growing library of "Perl You Need to Know" articles and much, much more.
Perl Mongers: Perl Users and Advocates.
Timeline of Perl and its Culture.

Hard Copy (and plenty of softer stuff)

The O'Reilly Perl Center: Good books about Perl. Home of the Camel and other Frequently Essential Perl Books.
The Perl Journal: magazine about Perl, has some stuff online (subscribers get full archive access!)

Perl Hackers

Homepage of the original Perl Hacker, Mr. Randal Schwartz.
Perl Paraphernelia: by Mark-Jason Dominus

Just Because

MacPerl: everyone has a Macintosh right?