The Ancient Trilogy of Warcraft 1_ well of eternity.
Ancient World of Warcraft Trilogy 2_ Devil's Soul
"Warcraft trilogy 3_ The sky is falling"
The official novel of Warcraft _ Longteng Century
The official novel of Warcraft _ King of Clans
Official Novel of Warcraft _ Blood and Glory
The Official Novel of Warcraft _ The Last Guardian
Warcraft battle novel _ The Rise of the Lich King
The official novel of Warcraft _ The Battle of Quicksand
The official novel of Warcraft _ The Road to Curse
Official Novel of Warcraft _ Unbreakable Spirit
Official Novel of Warcraft _ Tide of Darkness
The official novel of Warcraft _ Wheel of Hatred
The official novel of Warcraft _ The Rise of Tribes
The official novel of Warcraft _ Dark Gate
The official novel of Warcraft _ Night of the Dragon
The official novel of Warcraft _ Bloody Encyclopedia
The official novel of Warcraft _ Wrath of the Lich King
The plot background of World of Warcraft and World of Warcraft is basically the same. The first three films are arranged in order, and the latter ones don't matter.