Mr. Kiseon said he filmed this course in one day, but it took me a long time to finish itㅠ First of all, the entire lecture was short, but the content was very dense, so it was harder to follow than I thought. After watching the lecture and organizing it, I think I spent 1 hour per lectureㅎㅎ The best thing about listening to the lecture was that I was able to understand the principles. I have currently purchased all of the lectures except for the MVC course..ㅎㅎ Thank you for filming such great lectures^^