I listened to it with high expectations because there were so many good reviews. Since I'm a complete beginner, I didn't really understand the contents of the book, so I thought it would be better if I listened to the lecture, but I guess I'm still lacking a lot. While reading the book, I was curious about why this is written like this, what role this plays, and what the grammar is like, but the general explanations were just like, "This is how you do this. For more details, look up the official website~." And there were quite a few parts that were brought in from external sites, but since there are so many parts that have changed at this point, it was hard to find them. It's also hard to find explanations for them, and it's hard to rely on the community. It doesn't seem to be a lecture that teaches the concept of views. In conclusion, I felt once again that I should listen to the latest program lectures.