Chronology

Hunting Harkonnens (Short-Story)
The Butlerian Jihad
Whipping Mek (Short-Story)
The Machine Crusade
The Faces of a Martyr (Short-Story)
The Battle of Corrin

The Sisterhood of Dune

House Atreides
House Harkonnen
House Corrino

Dune
A Whisper of Caladan Seas (Short-Story, takes place during 'Dune')
Paul of Dune
The Road to Dune (Short-Story by FH)
Dune Messiah
The Winds of Dune
Children of Dune

God Emperor of Dune

Heretics of Dune
Chapterhouse Dune
Sea Child (Short-Story, takes place during 'Chapterhouse Dune')
Hunters of Dune