Very useful. I have seen many lectures, but there is no lecture that explains the concept of auto layout in such detail and depth. In addition, it is explained in detail by adopting examples of UI and UX that are often seen. However, it is easy to understand the lecture if you have basic knowledge of iOS and some concepts of the Swift language. If you are planning to take the lecture, I recommend that you listen to it after building up some basic knowledge. Your skills will definitely improve after taking this lecture.