In the third part of a series on building a blog with WordPress and Gatsby.js, the guide explores creating static pages using templates and components that pull data from WordPress. The process involves setting up page templates, configuring the gatsby-node.js file to programmatically create routes, and using React components to replace default templates. Readers are guided through creating a simple page layout with a title, content, and SEO elements, leveraging Gatsby's automatic routing capabilities. The tutorial further explains how to modify the header component to dynamically source the site name from WordPress and incorporate a menu using the WP API Menus plugin. By the end, users are equipped to create a functional blog combining WordPress's content management strengths with Gatsby's performance capabilities, with additional customization options available for further development. The author, Tim Smith, offers the complete code on GitHub and invites readers to connect with him on Twitter for further questions or discussions.