First of all, the instructor is a non-major, so he understands the minds of non-majors very well and explains in great detail. It's really great. (I'm a non-major, too.) Anyone can understand it. Also, nowhere else do they teach synchronous/asynchronous content like this. I used to use asynchronous when communicating, but I didn't know exactly why, but I learned it after taking the class. However, studying isn't something that you can do perfectly just by listening to it once, right? But this lecture is great because you can listen to it repeatedly as many times as you want once you buy it. Thank you. (Lastly, there are PDF materials and codes, so I really, really like it! Highly recommended!! I personally listened at 1.25x speed. There are times when the image quality goes down, but you can select the image quality in the settings window on the bottom right. If you select the highest, it will go back up.)