Learn to identify the many tribes of the international heavy metal community, from Thrash to Black Metal. Master the codes, from the sign of the horns to the Diabolus In Musica. Understand how Satanic Metal coexists with Christian Metal. Discover genres that have spread outside the Western world, like Japanese and Iranian Metal. With so much more to uncover, your journey into Heavy Metal has just begun. Bullet points: * The perfect impulse purchase for the friend that knows it all-or needs to know more! * Catch up to the Heavy Metal fan in your life with this collection of facts and info! * Advance solicited for October release!