While you wait for Metallica to finish work on their next album, why don’t you get yourself a copy of the 28-page Orbit: Metallica comic book here.
Orbit was written by Michael L. Frizell and illustrated by David Frizell, and it also features research from interior artist Jayfri Hashim, who says the following:
Metallica’s formation marks the beginning of metal, breeding thrash metal which progresses to heavy metal during the glam rock era. Many people get it wrong when they say Metallica is a rock band. They’re not. They are the very definition of a metal band. They were daring, innovative, and the story of their beginning fascinates me.