What is 'Dune'? Everything you should know about Frank Herbert's sci-fi epic.

Are you newly Dune-curious after watching the glorious debut trailer for Denis Villeneuve's upcoming adaptation? Well, Mashable has you covered.

If you're already well-acquainted with the spice, Melange, and you know the difference between Stilgar and a stillsuit, you're not going to learn much here. But Dune is a vast and...