It's the best value for money. It's a course that quickly improves your skills by focusing on examples of the most necessary parts of Excel, and it's a lecture by the best instructor in Korea in the Excel field. It's also great that you can choose the parts you need and take the course. Even though I don't know much about Excel, the witch's magic minimized my work time and maximized my rest time. I'm looking forward to the next course. ~~~~~