Hi there everyone, this is Simon Codrington, one of our senior developers from Web Bird Digital.
Custom taxonomies in WordPress are a powerful way to extend the functionality of your website. With taxonomies you can provide additional groupings to help organise your content such as your posts and pages.
Creating a great, dynamic and friendly website requires an administration area that is simple and intuitive to use, therefore having taxonomies to quickly group content together is essential.
I recently published an an extremely in-depth tutorial all about taxonomies over on Sitepoint.
If you are interested to learn more about WordPress and how taxonomies work this is a great resource to study.