It's great that you're constantly getting feedback and improving the course. The microphone quality is also clear and good. The only regret is that you probably filmed it short because you were aware that many users wouldn't watch the whole video if it was long. That's good, but the explanation time to help understanding was also shortened, so it felt like it was finished in a hurry. I think this course is sufficient to keep up with the development of JavaScript. I'll practice diligently. :)