It's a waste of even 1 point. Of course, it's a free lecture, but the instructor's speaking speed is so slow that it affects the progress of the lecture. Even when doing something really simple, he stutters and doesn't edit it and just uploads it. In particular, it takes a long time when indexing, and I think that's about 1-20% of the time. I thought it was because it's free, but when I look at the instructor's other paid lectures, the reviews aren't that good. This is the only lecture where you can learn Kotlin and Spring Boot at the same time, and he really caught one good content, but I'm really disappointed. I was especially disappointed in the English part. He said Execution as Execution (there are more), and if he had really used this development tool a lot, he wouldn't have said that. Even I, who has little development experience, say that... If someone who doesn't know anything saw it, I think he'd think, "What are you talking about?" Conclusion: Kotlin + Spring Boot are really good content. But I really don't like it. I think it would be faster to learn by just looking at blog posts and such.