If you know it but aren't quite sure? This was a great course for concretely organizing and visualizing concepts I was only vaguely familiar with. 1) From concepts to examples for easy understanding! It progresses through stages of conceptual explanation > structured explanation > hypothetical case examples, allowing you to concretely understand abstract concepts. 2) Examples applicable to actual work In explaining concepts, it points out aspects worth applying in practice, helping you think about how to apply them to your work. While taking the course, I'm organizing the content and also noting down parts I can apply, which has been very helpful. Thank you!