A beginner level course by Darrel Wilson over at Udemy.
The course comes in two sections - the first explaining how to achieve specific goals with the Divi Theme (a testimonials section, the footer section, etc.), the second takes you through building specific pages - About Us, Contact Us, the Blog Page, and others.
It is great for those who don't know anything about Divi, and want to get familiar with the theme, the Divi Builder, and how to build a site using the two. If however you already know Divi, and are looking to advance your knowledge, them maybe one of the alternatives would be better suited.