Basically, if you want a lot of money, you have to think of a complex system where you will have many things to sell in many different places. This is called marketing and business, and they teach it on BHW, but you need to do the research. A lot of research and possibly years of learning. Practice is the best teacher by the way. So as you learn, practice as soon as possible. Don't just read. If you read something and don't take action, you probably wasted your time.