WordPress 101 provides an overview of WordPress, including what it is, what it can be used for, and its key features. WordPress is an open source content management system (CMS) powered by PHP and MySQL. It can be used to build blogs, websites, online stores and more. Key aspects covered include the differences between WordPress.com and WordPress.org, using posts and pages, categories and tags, plugins, widgets, themes and design. Resources for learning more about WordPress are also provided.