It may be somewhat helpful for beginners, but it is boring because it is too focused on functions. It would have been less boring and more useful if the lecture had focused on examples of making simple objects. It may be disappointing for people who want to make something in 3D. And as for the sound of the video, there is howling in some videos and sometimes you can hear dog barking, as if the microphone was adjusted incorrectly. I hope you pay more attention to the sound when recording.