Personally, I think the content is good, and I also provide course notes, which can be read again and again.

You said that I didn't watch the video I found online, so I couldn't answer you. If the course is comprehensive, it's ok. I'm afraid it's not complete, and I don't know if the video you're looking for has been downloaded.

Finally, I want to say that as a person who has passed CET-6, we must pay attention to the study of real questions. 10 set is enough. Listening and reading are difficult to prepare, especially listening. If you have spare time to study, you can practice the dictation of VOA. My college teacher asked us to listen to VOA and write it down. Although it is painful at first, you will see the results after a while.

I hope my answer can help you, and you'd better choose the best answer.

If you don't understand, you can keep asking questions.