You should take a look at these books.
They're all published by
O'Reilly, and that's good.
(No, I'm not endorsing them, but I think their books are
good.)
Learning Perl, aka "The Llama book", definitely the first book for beginners. One of the authors is merlyn.
Programming Perl, aka "The Camel Book" or "The Bible". You need this.
Perl Cookbook, aka "The Ram book". Lots of small code snippets useful everywhere.
Perl In A Nutshell, aka "The Camel Head book". Get this if you need a handy, but complete reference.
There are many others, but these are best for beginners. (And you need enough time to read through them :) ).