I'm a one-man computer science department at a small
liberal arts college, and teach perl regularly.
In addition to the other sources mentioned, I've found
Simon Cozen's online book
Beginning Perl particularly helpful, including the short
pieces on CGI, debugging, and the various helpful appendices.
And while I appreciate the many good things about
merlyn's Learning Perl text, I think the choice of leaving out
how to invoke an object method fairly problematic,
especially since most CPAN modules rely on this syntax.
In my opinion, some discussion of
object oriented methods are a necessary
part of an intro programming course these days;
they aren't just an "advanced" feature.
- barrachois