I recommend this to beginners who have never used a design tool before. The only design tool I could use was Paint, but the lecture content was so easy that I could easily understand it. It was so easy that even someone like me could understand it at 2x speed. Looking at other reviews, people say that it felt like the instructor wasn't prepared, but I definitely felt that the instructor was improvising and not preparing for the lecture. However, the instructor was able to resolve any parts that got stuck in the middle within a minute or so, so it didn't take up much time. As for the lecture costing 15,000 won... well. It might be a useful lecture for a true beginner who has never even used Paint, but it feels a bit expensive for someone who hasn't. I wish it was released as a free lecture.