That one linked—The Definitive Guide to Catalyst: …—ISBN 1430223650—is actually not the Rockway book—Catalyst: Accelerating Perl Web Application Development, ISBN 1847190952—which was too much earlier to be a good recommendation today; a lot of the code would not even run on Catalyst today and it had a few other problems besides.

The authors of the newer, better book are Kieren Diment, Matt Trout, and several other contributors. The book is targeted towards hackers who are already solid in Perl chops and programming idioms so it would be nearly useless to beginner.