I completed the course today. I think this course would be great for data practitioners who are just about to move from beginner to intermediate level. However, I would like to leave a few drawbacks as a review. First, since the materials are older, there are some Python syntaxes that are no longer in use. In particular, I encountered errors when calling FinanceDataReader, perhaps due to changes in its data structure, so I had to download CSV files to follow along. Also, it was lacking in terms of how to clean data more effectively. Personally, I wish there had been more exercises on handling missing values, data transformation, and especially groupby, melt, and pivot_table. Additionally, the instructor spoke so fast that I had to keep pausing the video. It felt like the speaking was rushed, and the final lectures felt a bit lacking in sincerity. However, the instructor has a great sense for choosing data-related topics. I see there are several other courses here on Inflearn, and I would like to take more of them. Lastly, I want to say thank you for your hard work.