This specific tutorial is just a single movie from chapter four of the WordPress: Creating Custom Widgets and Plugins with PHP course presented by lynda.com author Drew Falkman. The complete WordPress: Creating Custom Widgets and Plugins with PHP course has a total duration of 3 hours and 51 minutes, and provides an in-depth look at the tasks related to WordPress add-ons: installing and administering, building and customizing, creating editable options and database tables, working with posts and pages, and utilizing jQuery and AJAX
WordPress: Creating Custom Widgets and Plugins with PHP table of contents:
Introduction
1. Getting Started
2. Understanding WordPress Plugin Basics
3. Building a WordPress Plugin
4. Using and Creating WordPress Widgets
5. Plugin Options and Administration
6. Using the WordPress Database
7. The Loop, Posts, and Pages
8. The WordPress Plugin Lifecycle
9. Security and Extensibility
Conclusion