When I first started, I thought I would only listen to the first lecture since it was the beginning, but I ended up listening to the entire second section in no time! In fact, when I watch Excel lectures, the functions are explained well, but there are many experiences where it is not immediately applicable to practical use. I think that the explanation is concise and the content is organized in a way that is consistent with practical use. I am looking forward to learning the functions that I have been using vaguely and through trial and error properly through this opportunity and reducing wasted time. I think I am addicted to the instructor's unique '~입니다' tone of voice *_*! Great lecture instructor!