Hello, Yugeun Kim! This is the instructor. First of all, thank you so much for taking the course <Everything About Structure Exploration and Manipulation - [DOM Mastery Part 1]> and for leaving such a thoughtful review. Hearing that the "course content is sincere and high-quality," and receiving feedback that your vague understanding of DOM usage has been theoretically solidified, gives me great strength and a sense of accomplishment. It makes me feel that the time I spent preparing and thinking about your growth was well worth it. Since you have trusted me enough to purchase Part 2 and Part 3 to quench your thirst for practical knowledge, I will continue to do my best to ensure you gain deep, immediately applicable insights in the upcoming lectures as well. To support your passionate learning, I would like to offer you a small benefit. If there are any additional courses in our curriculum that you wish to take, please feel free to contact me at the email address below. I will send you a discount coupon immediately upon confirmation. Inquiry Email: jeony0535@naver.com Thank you once again for taking the time to leave such warm words. I am sincerely rooting for your growth! :D