The My Course option allows you to build content that consists of interactive images and text that you can share with students or collaborators. To create a new course, start by (1) +New course, once the course is created you can add/edit the content by opening the edit pane (2), the end result is shown when you click (3), you can simply share a course via a link like images or collections.

This is the editor pane. Here you can add new content (1), you select which type of content you want to add in (2), if you opt for Slide or Collection simply pick any of your available slides.