There are lots of folks out there who have managed to do exactly that. They're called consultants, gurus, etc. It's not as simple as just learning stuff, teachi

There are lots of folks out there who have managed to do exactly that. They're called consultants, gurus, etc. It's not as simple as just learning stuff, teaching it, and getting paid, but if you love doing those things it's certainly a way to make a living at it. Among the keys to pulling this off includes finding information that people are motivated to pay you to teach them. Unfortunately, most of the obvious things that pass this test are pretty well-covered by slimy folks that can outsell most of us (how to make money in real estate, how to pick folks up at the bar, etc.). But anything you know that other people know that they want to know can be made to work. To get started, you have to start proving that you're an expert at what you want to be paid to teach. Start making high-quality contributions on forums that discuss what you want to teach. Attend conferences. (Self-)publish a book. You'll have to act like everyone knows you're an expert even in the early days before everyone knows. But eventually you'll get there if you're patient, smart, and just the right amount of self-aggrandizing.