How to prevent a theme’s background image from overwriting the user-selected background color.

A tutorial on how plugin and theme developers can add contextual help to their plugin and theme admin pages in WordPress.

How to remove meta boxes in the WordPress post editing screen to make for a less cluttered writing experience.

How users can create a custom functions plugin rather than dropping useful functionality into their theme’s functions file.

How to display links to all image sizes in a Flickr-esque fashion on image attachment pages in WordPress.

How to properly create a clean and organized WordPress theme functions.php file.

How to appropriately load functions files and theme templates within WordPress themes.

How to properly register, load, and use dynamic sidebars and sidebar templates in WordPress themes.

How to use the theme support functionality to support WordPress features and build custom features within themes.

How theme developers can use heavy stylesheets in development but provide lightweight stylesheets in the publicly-released themes.