Ask HN: How did you come up ideas that make money?
Just read solo founder thread. It looks really impressive. I want to hear and learn from people who have paid side projects or passive income.
How do you come up with ideas that make money? How do you make sure that 2/3 months ( or more) time that you are investing is going to bring in money?
How do you find customers and do sales/marketing part?
Thank you.