Belinda Carlisle, a child of L.A., and a couple of friends were teens hanging out in the city’s punk music scene in the late ’70s. Only one or two of them knew much about being musicians, but they threw themselves into it and by 1978, after a lineup change or two, started calling themselves The Go-Go’s. They were, she remembers, “terrible,” but so were most of the other bands. They spent three…