'Everything about Digital Marketing in 3 Hours', but in reality, it is difficult to finish in 3 hours. From my perspective, finishing means absorbing everything in the lecture, but I am not capable enough to understand the lecture as deeply as the instructor, so it was difficult to finish in 3 hours. Each lecture was composed of short periods of time, so I could watch it lightly. It is a very informative lecture where the instructor's know-how is condensed into such a short lecture. I am grateful that I can listen to this lecture for 11,000 won, and I plan to watch the unfinished content several times until I understand it. I am looking forward to the next lecture.