If you're going to be using Perl for CGIs, I recommend (once you have the basics under your belt) that you read the articles that Randal Schwartz ( merlyn, here) wrote for Web Techniques magazine. Each one picks a problem, solves it, and provides a line-by-line code walkthrough. A careful study of these articles helped me up the learning curve when I was starting out.
merlyn's articles can be found here. I recommend having a copy of the "Camel" book within reach.
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