CGI101 is decent, but is a little, I don't know... O'Reily is still recomended.
www.cgi101.com for a free preview of the book. I think you can see the first few chapters.
I would also like to point out that you should avoid the "Teach Yourself Perl in 21 Days" book from Sam's Publishing at all costs. Many, many reasons to avoid(ask if ya want any)
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I wish I were a Canuck
All they have to do is drink beer, play hockey, and say "Eh"
* No offense meant to any Canadians