I'm not using nextJS at work, but I bought the course to quickly learn the basics of nextJS for a job change. I was able to learn about the content that was really necessary, but I needed some time to look up the concepts that came up occasionally.. I think that's why it was better!! Developers are a job group that always studies and grows. ㅎㅎ Thank you so much for the great course. I'm going to take Part 2 too..