There are places where you can start, such as YCombinator. Or you can turn to paid options such as paid startup dev studios. Self-plug alert: I run one and we're called Asper Brothers. You can also learn all the ropes the hard way just for fun. That's also great. Just ensure you're solving someone's problem actually and that there's enough people willing to pay you for solving this problem. Coming up with ideas just to build something is a very risky path.
There are places where you can start, such as YCombinator. Or you can turn to paid options such as paid startup dev studios. Self-plug alert: I run one and we're called Asper Brothers. You can also learn all the ropes the hard way just for fun. That's also great. Just ensure you're solving someone's problem actually and that there's enough people willing to pay you for solving this problem. Coming up with ideas just to build something is a very risky path.