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 :) ).