Here is some information I gleaned from http://esohead.com/quests regarding zone and level progression.
Everyone starts at The Wailing Prison. From there:
AD:
Khenarthi's Roost (level 2-5 quests)
Auridon (level 5-15 quests)
Grahtwood (level 16-23 quests with a single level 24 quest)
Greenshade (level 24-31 quests with a single level 32 quest)
Malabal Tor (level 32-level 37 quests)
Reaper's March (level 37-43 quests)
DC:
Stros M'Kai (level 2 quests with a single level 3 quest)
Betnikh (level 3-4 quests with a single level 5 quest)
Glenumbra (level 5-15 quests)
Stormhaven (level 16-23 quests)
Rivenspire (level 24-30 quests)
Alik'r Desert (level 31-37 quests)
Bangkorai (level 37-42 quests)
EP:
Bleakrock Isle (level 2-3 quests)
Bal Foyen (level 4 quests)
Stonefalls (level 5-15 quests)
Deshaan (level 15-24 quests)
Shadowfen (level 24-31 quests)
Eastmarch (level 31-37 with a single level 38 quest)
The Rift (level 38-43 quests)
After those zones are cleared:
Of course, the Cyrodiil quests can be completed at any time once the player reaches level 10. All of the Cyrodiil quests are level 50 quests.
Lastly, ESO also lists a zone