Create a small simple product/service, try everything you know and read about to see if you can make it successful. If you succeeds try and sell the company se

Create a small simple product/service, try everything you know and read about to see if you can make it successful. If you succeeds try and sell the company sell or expand the business. If not move on to another product, rinse and repeat. It's not different than any other thing in this world. Start small, use your experience to gradually build bigger and bigger.