I usually study backend related stuff like java, spring, jpa, etc. And I thought I got a job as a backend, but the company said I had to do frontend, so I wandered around this and that lecture and I am studying at the company. In this lecture, the instructor explains the concepts very well and easily. If you have studied programming languages, strictly speaking, object-oriented programming languages, you will have no problem studying this lecture. This lecture is a really good lecture among all the lectures I have taken. If you take this lecture, you will not regret the money, and through this, you will grow more and earn more money. I can say with certainty that this lecture is expected to have great output compared to small input.