in reply to Your opinion about a book
That's a really old edition of Programming Perl. I'd recommend getting something more up to date than that; a lot can change in 14 years. There have been several updated editions of this book printed since; the most recent was in 2012.
If you can tolerate reading online rather than dead trees, then there are a couple of very good Perl books you can read for free! (You can also pay for the dead tree editions, but I don't think you'll find them for $0.01.)
A pre-edited version of Ovid's Beginning Perl was also available on the O'Reilly website. It's gone now, but still available via archive.org.
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