Prevent Wordpress Admin Updating, Installing Plugins

How to prevent Wordpress checking for plugin updates, and installing plugins from wp-admin

Using Wordpress Actions with PHP Closures

Using Wordpress Actions with PHP Closures to allow for parameter passing to custom functions

How to automatically flush permalinks in Wordpress

This will show you how to automatically flush permalinks when you enable a Wordpress plugin for the first time.

Adding a custom post type to Wordpress using NanoSoup/Nemesis

Using Nemesis you can quickly create a custom post type for Wordpress with some great defaults