Will Doyle
Explorer
There are plenty of adventures available that allow you to stay in the Nentir Vale for the whole of the heroic tier. The Fallcrest section at the back of the DMG has all the world building you need.
I'd recommend:
Level 1: The Slaying Stone
Level 2-4: Reavers of Harkenwold (great adventure, plus you get a load of monster tokens and battlemaps)
Level 4-6: Thunderspire Labyrinth
Level 6-10: Madness at Gardmore Abbey
I'd recommend:
Level 1: The Slaying Stone
Level 2-4: Reavers of Harkenwold (great adventure, plus you get a load of monster tokens and battlemaps)
Level 4-6: Thunderspire Labyrinth
Level 6-10: Madness at Gardmore Abbey