It's the best. I think I could see the instructor's experience? or teaching ability while listening to the lecture. I think there's a difference between what you're good at and what you teach well, but I think it was easy to get started because you explained logically how and what it was like. In addition, it was great that there was a college student discount. It's a shame that there's no backend lecture... but I want to listen to other lectures. Thank you!