The course description claims, “In this course you will go beyond creating text-only EPUBs. Pariah Burke will start off by helping you convert print book layouts to ebook, specifying story and imagery order through different means. Next you will learn how to format and include cover images, illustrations, native InDesign vector objects, and more, and how to control their conversion and formatting during EPUB export. Then you will move into incorporating audio and video into your ebook. Wrapping up the course, you'll learn how to include hyperlinks and special hyperlinks, and all the final formatting options in InDesign's EPUB - Reflowable Export Options."
The tutorial seems very comprehensive.
(I have no connection with Pariah Burke or Trainsimple.com)