The only down side is that the Web Based interactive segment is no longer available. not a big deal since it's the same quizes as in the book, but there was a gee-whiz, isn't it fun factor to have it available online.
This book covers everything from soup to nuts. It starts the learner off slowly with the basic perl syntax and then smoothly moves into subroutines, OOP, DBI modules, Security, etc. all with the same interesting and amusing style.
I don't know if it's mentioned in the Editorial review, but the author is the Editor of The Perl Journal ([...]) which is a magazine devoted to the perl programming language. So Jon Orwant *knows* his topic.