I was the opposite to you. (Programming|Learning) Perl did nothing for me. I own both, but have read neither fully. The first book on Perl that I did fully read, several times, is The Perl Cookbook. Absolutely fantastic for people (such as myself) who came to Perl from a Awk/C/Shell background.
Not books, but there's a huge amount of help available locally in perldoc, either as html, your shell or perldoc.perl.org.
There's a wealth of information here on Perlmonks. Just look at the Tutorials, or try going back a year or two in Recently Active Threads.
It's sad, but once-upon-a-time, I would have recommended comp.lang.perl.misc as a fantastic way of learning Perl, but it's not the place it used to be :(