Most of the content needed for practical work is included. Even if I search for books or tutorials, they are basic content, I spent a lot of time searching to find what I needed for practical work, but after listening to the lecture, I was able to take it well because it mainly contains the content needed for practical work in app development. The server connection part that was especially necessary without any unnecessary details, and especially the custom plugin and custom component were useful. It saved a lot of time trying to understand Ionic in a short period of time. Please continue the good lectures.