WordPress Plugin Developer Handbook is Coming Soon

WordPress is preparing a Plugin Developer Handbook to help both novice and experienced developers. So far chapter outlines include items such as organizing plugin files, actions/filters, widgets, AJAX, options, custom post types, custom taxonomies, pluggable functions, and many more. This is certain to be a handy resource for aspiring plugin developers. If you have any ideas or feedback for the initial outline of what should be included, leave a comment at the WordPress development blog.