The Burning Crusade consists of seven zones. The optimal route for experiencing the storyline would be to follow the zones in this order: Hellfire Peninsula, Zangarmarsh, Terokkar Forest, Nagrand, Blade's Edge Mountains, Netherstorm, and Shadowmoon Valley. While there are many questlines in each zone, for the sake of efficiency, I will focus on key quest chains.
Quest Chain: The Dark Portal
- Quest Giver: Watch Commander Relthorn Netherwane
- Description: This quest chain serves as the introduction to Outland, involving defense against the invading forces of the Burning Legion at the Stair of Destiny.
Quest Chain: The Umbrafen Tribe
- Quest Giver: Ysiel Windsinger
- Description: This quest chain involves investigating the local tribe's strange behavior, which is due to the influence of the Naga.
Quest Chain: The Skettis Offensive
- Quest Giver: Defender Grashna
- Description: This chain revolves around the threat of the Arakkoa, bird-like humanoids in the area of Skettis.
Quest Chain: The Throne of the Elements
- Quest Giver: Elementalist Untrag
- Description: This quest chain brings you closer to the elements of Draenor, with tasks given by the Fury of Earth, Air, Fire, and Water.
Quest Chain: Showdown
- Quest Giver: Baron Sablemane
- Description: This chain culminates in a showdown with Gruul the Dragonkiller, the father of the Gronn and lord over ogres in Outland.
Quest Chain: Dr. Boom!
- Quest Giver: Lead Sapper Blastfizzle
- Description: This chain focuses on taking down the mad goblin scientist known as Dr. Boom.
Quest Chain: Thwart the Dark Conclave
- Quest Giver: Parshah
- Description: This chain involves thwarting the Dark Conclave, a remnant group of the Shadow Council who are trying to summon an ancient and powerful demon.