It's hard to see this as a "lecture". If you have some basic knowledge and want to refer to it when writing source code, it's a good video. However, it doesn't seem to be helpful at all for learning, and there are no explanations. Also, the video is old and there are many differences from the present. If you are just starting out with app development, it would be better to press the back button. Also, maybe to make the pronunciation clear, the beginning of the lecture has a hoarse intonation, which makes the pronunciation even more muffled and difficult to understand.