This is truly the best lecture. I had a preconceived notion that lectures on making lectures were all too predictable, and since I had already seen related lectures from Yudmna MKㅇㅇ, I didn't expect much and just turned it on to kill time, but as I listened to it with my ear, I became interested and got absorbed, and I was surprised to find myself already opening my lecture notes. I can really feel how well-organized and well-structured the instructor's Excel lectures are.