The dungeons and raids your level opens

36 quests on the board here, banded 26–44. 4 upgrades within reach drop in the zone.
Behind you: Undercity still holds 2 open errands. Razorfen Downs opens at 35. 30 upgrades still out there, ranked under Upgrades.
Nothing within reach yet in Swamp of Sorrows.
Nothing for a mage in Elwynn Forest, Teldrassil, Stormwind City, Ironforge, Thunder Bluff, Darnassus, Mulgore, Warsong Gulch, Arathi Basin, Deadwind Pass, Tirisfal Glades.