Marty Schwartz uploaded his first guitar tutorial in order to make sure one of his students was practicing. He now teaches people online through guitar tutorials and gets 7 million views a month.

Forbes contributors publish independent expert analyses and insights. Peter Suciu covers trends in the world of aerospace and defense. There is the old joke "How do you get to Carnegie Hall?" The ...

Two decades ago, my drum teacher Marty told me he was jealous of the millennial generation. When sweaty, teenage Marty learned to play in the 1970s, he wore out 10-second increments on his vinyl ...