What is the Codex?
The Codex or ‘WordPress Codex’ is the official user manual for anyone who uses the Content Management System (CMS). You can access it at codex.wordpress.org.
More About the WordPress Codex
The WordPress Codex contains a vast amount of documentation and resources regarding anything related to WordPress development. It is organized into larger, intuitive categories, including: ‘Learn How to Use WordPress,’ ‘Working with Themes’, ‘Write a Plugin,’ and more.
The Codex also includes a glossary of helpful terms and a variety of step-by-step tutorial guides. It even contains lessons on advanced topics, troubleshooting tips, and WordPress volunteer opportunities.
One great thing about the Codex is that it is constantly evolving. It is not always up-to-date. Still, it can be an excellent resource for WordPress developers of any skill level.