VENTURA, Calif.–(BUSINESS WIRE)–High school math teacher Bobby Trunz always has a few guitars at his desk, and when students ask why, he invites them to join his beginner guitar class. “I’m not trying ...

These days, there's no shortage of ways to learn guitar. Of course, on the one hand, you've got the tried-and-true old-school methods, like private lessons, group classes, and even sheet music. And ...