Every chapter of the Zend Framework Book is listed below in reading order. The book builds progressively, but each chapter is also designed to be useful on its own if you need to jump to a specific topic.
For an overview of what the book covers and how it fits with the rest of the site, see the Zend Framework Book hub.
Reading Approach
If you are working through the book from the beginning, the chapters follow a natural progression from setup and scaffolding through application development, domain modelling, and infrastructure. If you are dipping into specific topics, the Architecture, Model, and Performance chapters tend to be the most referenced.
Each chapter includes a modern context section highlighting what has changed since Zend Framework 1 and where the original advice still applies.