Modern WordPress theme development includes classic PHP themes, hybrid, and block-based full-site editing. It utilizes a template hierarchy for content display, supported by Advanced Custom Fields (ACF®) for enhanced features. Best practices emphasize modular structures, optimization, and accessibility. The guide covers custom theme creation from scratch to advanced hybrid functions, leveraging tools like ACF to enable dynamic content management while maintaining performance and flexibility. Developers are encouraged to follow design best practices for maintainability and user experience, emphasizing structure, functionality, and scalability throughout the theme building process.
https://www.advancedcustomfields.com/blog/wordpress-custom-theme-development/