I heard it well. It seems good for students who want to learn academic concepts related to DOM. Therefore, if you want to practice reading code while understanding DOM, I recommend it. However, the only regret is the difficulty of the lecture. The frequent screen changes and the presence or absence of live coding may be a bit burdensome for beginners, and it may feel a bit boring for intermediate or higher level students who want to learn quickly at 2x speed or need a simple summary. However, it seems true that it is a lecture full of sincerity :)