How to start becoming a solo entrepreneur: Build small side projects, finish and polish them (aim for less than 2 weeks), making them well-scoped, functional small products. Then move on to creating more small products, gradually increasing complexity and adding payment options so people can pay if they want to. Still, each should be finished with a proper website, checkout flow, etc. These products don't have to be extremely useful or solve a painful problem, they're just for training your…