The topic seems good. Thank you for providing a good lecture. What I want to say is that the overall content seems to be unorganized. Since it is a paid lecture, it would be good to organize the outline and the message and information you want to convey in advance. Since it is an online lecture, it would be good to code together. In this case, it would be good to think about the content that would be good to code in advance. Coding without any point seems to not value the other person's time. (In fact, I quickly skimmed through it)