The Naver Smart Store and other old versions - the current Naver Smart Store UI has all been changed, but it hasn't been updated. The related reference sites have also had their UI and functionality changed significantly, but they haven't been updated either. This related content all comes up when you search for it. I bought it because the update date was listed as this year, but nothing has been updated, and from what I can see, it looks like a 5-year-old version. It took me about an hour to go through all this content. This course material is currently not updated. I regret it because the money isn't insignificant.