This collection contains Frank Herbert's Dune saga, widely considered to be one of the greatest works of SF in history:
Dune
Dune Messiah
Children of Dune
God Emperor of Dune
Heretics of Dune
Chapter House Dune

Read the series which inspired the 2021 Denis Villeneuve epic film adaptation, Dune, starring Oscar Isaac, Timothée Chalamet, Zendaya and Josh Brolin.