I found Joyce while searching for free Kotlin lectures on YouTube. Despite being a free lecture, it was very helpful in everything from basic Kotlin grammar to advanced grammar and app creation. After taking this free lecture, I tried making a copy app on my own, but I felt that my skills were not enough to copy apps made by developers in the field. I also lacked knowledge about fragments, and even when I searched on Google, I couldn't understand the concepts such as threads, firebase, and retrofit on my own. So I thought I needed a Kotlin lecture, and while I was looking, I found out that Joyce's lecture, which I had taken for free, had been released. I thought it was the perfect lecture for me who was studying on my own, and since there was a discount, I immediately signed up for the course. The results were very satisfying. It was not just about learning conceptual and theoretical parts, but also focused on practical content. It was exactly what I wanted. Usually, when you take a Kotlin course, it often only teaches grammar and makes really simple apps, but this course allows you to make multiple apps instead of just one, so I felt that it would be helpful in practice. Of course, to become a developer, you need to go through more in-depth studies, but I think this course will be a good stepping stone to establish the foundation. If there is a course for intermediate users, it would be better because those who have taken this course will be able to continue listening to it without any interruption. Haha Thank you for making this course!! I will also work hard to become a developer who can teach others a lot of knowledge!!!