World of Warcraft: Cataclysm greatly revamped the 1-60 questing and dungeon experience, making it incredibly easy to access all of the classic dungeons and their respective quests while leveling. Later on, Outland and Northrend dungeon quests were also added to their respective dungeons. Completing dungeon quests is not only the easiest way to gear up your character, but it’s also a great way to level up quickly!
Classic Dungeons: Level 15-60
Quests for every classic dungeon can be found inside the dungeon at the entrance. Some dungeons, such as Razorfen Kraul, also have an escort quest where you must protect an NPC as he makes his way to the exit. Additionally, your class trainer will give you a class-specific quest for Shadowfang Keep at level 20 and Blackrock Depths at level 50.
Outland Dungeons: Level 60-70
All Outland dungeon quests are now located inside their respective dungeons.
Northrend Dungeons: Level 70 to 80
All Northrend dungeon quests are now located inside their respective dungeons.
Cataclysm Dungeons: Level 80 to 85
Blackrock Caverns, Stonecore, Vortex Pinnacle, Grim Batol, Lost City of the Tol’vir: The quests for these dungeons are conveniently located inside the instance.
Throne of the Tides: After completing the entire quest line in Vashj’ir you will receive a quest for this dungeon.
Halls of Origination: After completing the entire quest line in Uldum you will receive a quest for this dungeon.