There's a problem with the sound.

The lecture was useful.

Watched easily.

Please explain in detail.

It was a lecture that explained concepts well at a basic level.

I'm sad..

This is a great lecture to quickly review the entire content and then study the parts you don't understand in depth by reading the book. I recommend it to those who don't have time to read the book from the beginning.

It helped me so much.

This was a class where I was expecting some additional explanation of the book's contents, but I was a little disappointed that the book's contents were not fully expressed.

No lol. He throws out a lecture and doesn't answer any questions like he doesn't know anything, and he still wants to take the money? This guy has the wrong mindset;; The lecture quality is also bad except for the first two or three lectures~