The following are WordPress articles and resources on writing and using WordPress Plugins. Some of the content may include information from past versions of WordPress.

WordPress Plugin Writing and Tips

• WordPress Tutorial: Your First WP Plugin – Mark on WordPress
• Using a namespace for your functions and classes – Yoast
• Creating Custom WordPress Widgets
• Introduction to Hooks: a basic WordPress building block – WPCandy
• Tutorial: Creating a Twitter Widget for WordPress – Theme.fm