I understand you're looking for guidance on installing the PDF version of the — specifically the PDF edition, presumably obtained legally (e.g., through a purchase from Packt Publishing).
You can read it for free with a Packt subscription or buy the eBook (DRM-free). But even without the book, you can install and test the plugin examples right now. Your action plan: , is a comprehensive resource
, is a comprehensive resource for developers looking to extend WordPress functionality. The most recent edition (Third Edition, released in March 2022) focuses on modern practices, including the block editor and integrating external data. How to Access the "Cookbook" Final Verdict: Is the PDF Installation Worth It
Beyond the basics, the text covers integration with external APIs and the WordPress database. Your action plan:
: WordPress is built on hooks. If you don't understand add_action() , start there.