This is the best marketing lecture I've ever heard online. As a startup founder, I've had a lot of concerns about what marketing really is, what customers and markets are, and how I should market my product, but I've finally found a lecture that solves them. There are many lectures that cover tools like GA and Facebook, but there aren't many lectures that cover the essence of marketing in depth and neatly only the key points. Since it's a marketing expert with startup experience, he really explains it well from the perspective of a founder. It's a lecture that I want to keep for a long time and take out from time to time. I'm grateful for the low price and listened to it well. I'll also apply for an offline coffee chat.