Seeing so there is no defined path and users choose their own, the "add to my list" feature is useful (essential) because it lets you pick the content you want to learn and make a "to do" list from the various topics.
BUT if I add video 1, video 2, video 3, video 4 etc to my list because I have chosen to study those topics in that order, the list actually displays in this order: Video 4, video 3, video 2, video 1. It displays in reverse order.
It would be more useful to display the list in the order in which the content was added, not with the most recently added content first.