It's really the best!! I took the CS lecture and was so satisfied that I also purchased the coding test lecture. But I was worried about registering for the course because I was using Java, but it's a lecture that I'm satisfied with without any problems in listening to the lecture, and the time I spent worrying is a waste. It's so easy to understand because the process is explained one by one with pictures, and the problems are suitable for the basics, so it seems good for reviewing the basics in a hurry! I'm a lecture collector, so I bought and watched all kinds of things, but Mr. Noh's lecture is the best.. Thank you for making such a great lecture. And thank you for always kindly answering my questions.