Since you are a student, you probably have little experience with Excel data in the workplace, but it is amazing that you are taking this course!!! There must have been quite a few times when you thought, 'Do I really have to go through such a difficult time...'. While you are at it, I think you should try 'VBA' too. It will definitely be a good starting point to make Choi Young-gyun a unique 'data scientist'. If you are greedy, you can try Python and BI tools too.. I'm sorry!! I have never met Choi Young-gyun, but I thought you would do well, so I tried. I hope you are safe~ I hope you are doing well