Even though it was basic theory, it was too difficult for a beginner.

Very satisfied.

It was a good lecture.

It was helpful.

Regardless of the course content, the logical progression is exceptionally meticulous. By following what seems like obvious points, you eventually arrive at something that was not obvious at all. However, one minor drawback is the visual guidance. If the instructor's explanation and the viewer's gaze were more naturally connected—perhaps by using a mouse pointer or on-screen writing—it would further enhance understanding. It would also make it easier to locate specific content when rewatching the lecture later.