The TypeScript introductory course was a beginner-oriented course centered on easy-to-follow examples. Those who are new to TypeScript should listen to the lecture of Captain Pangyo, the first instructor! Even though I only completed the introductory course, I could see that it was an easy and useful course. It may be difficult to make a course (many chapters + detailed explanations), but it seems to be the bone and flesh of the front-end basics for those who learn it. I also purchased the practical course, so I will listen to it well. Thank you~!