This document provides an introduction to WordPress, including what it is, how to install a new WordPress site, and how to create a basic child theme. WordPress is free and open source software for publishing websites. Installing a new WordPress site requires access to a server with PHP and MySQL, downloading the WordPress files, and uploading them to a server. Creating a basic child theme involves creating an index.php file and style.css file that imports the parent theme's style.css file and allows for customizations.