I am a non-major who majored in another major. I took the course to prepare for the certification because I wanted to change my job to QA. The actual study time was about 40 hours in total. It took a long time to turn on the lecture, compare it with the syllabus, and write down the lecture content in my notebook. The knowledge sharer's explanation was concise and the tone of voice and speed were appropriate, so I think it was the most focused lecture I've ever taken at a university or academy. I'm not a major, so I don't know if it will be helpful to majors, but when I first opened the syllabus, I couldn't understand anything, but now I get in the low to mid 30s when I solve the practice problems. I'll do well on the test tomorrow! Thank you~