This document provides instructions for 10 things to do after installing WordPress before writing the first post. These include changing the default admin, adding a security plugin, changing permalinks, activating Akismet, installing WordPress SEO by Yoast, activating Google Analytics, adding categories, changing the blog tagline, installing a theme, and backing up the site for protection. The document recommends specific plugins and actions to take to optimize security, SEO, analytics, and organization of the new WordPress site.