There are some things you should just experience. A few years back I took a 10 day silent meditation retreat (Vipassana). People ask me about it all the time. I explain, but I struggle to describe that experience in a way that I can do justice. You simply need to experience it. It is life changing. While time will tell if @shreyas's Product Sense course is life changing, but it gets close to experiencing something really unique. If you are in product and have a desire to get better at that craft, highly recommend taking this course. There is something about immersing yourself in the best material/content you can find on a given topic that has the potential to transform you. You may look at the price and think thats steep, but I promise you, if you really are going to make product your career, you will not regret spending money here.