NT Perl in 21 days? Do whatever you can to get it out of the place as quickly as possible.

Perl Black Book? Getting a little dated now, but it is basically accurate, being little more than a rewrite of the basic Perl documentation. As someone else said, always useful during brain farts and usually eaasier to find things in than in the docs.

Perl 5 Interactive Course? Not seen it, but given that it is by Jon Orwant it may well be quite okay! I am not sure if I have read anything he wrote himself, but he did a great job as editor of "The Perl Journal".

jdtoronto