Discworld , here are the Discworld Books in Order

The Colour Of Magic

The Light Fantastic

Equal Rites

Mort

Sourcery

Wyrd Sisters

Pyramids

Guards ! Guards!

Eric

Moving Pictures

Reaper Man

Witches Abroad

Small Gods

Lords and Ladies

Men at Arms

Soul Music

Intresting Times

Maskerade

Feet of Clay

Hogfather

Jingo

The Last Continent

Carpe Jugulum

The Fifth Elephant

The Truth

Theif Of Time

Night Watch

Monstrous Regiment

Going Postal

Thud!