Learning guitar – or any instrument, really – is a series of constant questions. How do I tune this thing? How in the world do you play a barre chord? Do I seriously have to play a song for you?

Jesse Colin Young, who sang one of the signature songs of the 1960s counterculture, the Youngbloods’ “Get Together,” before moving into a solo career in the ’70s, has died at age 83. His wife and ...