Instruct: Classify a review as either positive or negative.
Query: Not worth the money

This book is full of inconsistency and errors. And is very unprofessional. First it doesn't show you how to properly setup the override systems, which means all of your template edits will be overwritten upon your first upgrade. It also tells you how to do things that are not possible with Zen Cart. For instance, it covers adding products without categories, the problem with this is your products won't show in the category side box. This book does more to confuse, than it does to help. I would suggest staying away.