When I choose a programming instructor, I look at two things. 1. Is the instructor truly an expert in the field? 2. Has the instructor contributed to related technologies or communities? I can confidently say that Ilko satisfies both of these. If you have to take a class, I think you should take it from this person. He packages existing Hangul APIs to create his own packages, and is active in the official Hangul and Computer development community, and writes documents and articles on related technologies. In addition to all of the above activities, he provides feedback to students' questions incredibly quickly. What other classes would you take if you have someone like him as an instructor? It's rare to find someone with this level of passion and deep interest in a technology. If you want to take an automation class related to Hangul programs, this is the best class. There is no other choice. If you are hesitant to purchase the class, it's not too late to purchase it first and then evaluate it.