I am a third-year undergraduate student interested in analog circuit design and even mixed signals. When I learned electronic circuits 1 and 2 in my second year, I thought it was too easy and I confidently challenged myself because I was ranked high in analog grades, but when I actually tried to study on my own, I realized that I only learned the basics and memorized formulas. So, while looking for a lecture, I found out about Samkochi, and since Samkochi's lecture came out, I unknowingly paid for it. Unlike spoon-fed education in Idec or special lectures, this is a lecture that I really like because I can think and worry on my own. The price may be burdensome for undergraduates, but I am learning so much without any regrets. +) In addition to the lecture, I can get so much information through Samkochi's cafe, so it feels cheap.