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all about custom posts types and how to create post types, custom taxonomies, and display them by hacking your WordPress theme

"In this article, we'll look at how you can add your own custom links to the bar with code so you can quickly access parts of the front and backend of your site with ease. This will be a simple enough task, all we need is one function: add_node(). I recommend taking a look at what the Codex has to say about it, I'll show you the basics using a couple of examples."