Where is the link for the web pages that correspond to the on screen discussion diagrams?

Under the Resources section of the course

Welcome to the course, George! You can find the link to the associated webpage under the Resources section (and in the lesson description for Linux Academy). For example, if you access the Understanding Cloud Computing lesson and click on the RESOURCES tab (on the top left), you’ll see a resource named, Understanding Cloud Computing Webpage, that takes you directly to the webpage.