WordPress is a free and open-source content management system that can be used to create websites and blogs. It offers two main options - WordPress.com which is hosted by Automattic and requires no technical knowledge, and WordPress.org which can be downloaded and installed on a user's own hosting but requires some technical skills. The document discusses the features and capabilities of WordPress, providing examples of how the presenter uses WordPress for blogging, storing files and artifacts, running courses, and applying for jobs. Links are also included for signing up for WordPress and learning more about the differences between WordPress.com and WordPress.org.