It seems like a good explanation because it explains the necessary content from the official react native documentation and sometimes talks about content used in the field. However, in order to listen to this lecture, I have to listen to the correct version, and since the current iOS Xcode version is the latest, there are too many errors and some parts don't even run. So I studied by installing the latest versions of everything from npm to react native, but a lot of things have changed with the version upgrade. Fortunately, I was able to finish the lecture well by Googling. I was a little disappointed that there were no answers when I asked questions here and there, but I think it's a useful lecture for beginners. Thank you.