Spec guides

All 27 specs, from game build 1.60.1.70707. Each guide holds the spec's tree, its new and changed talents, its spells, when each tier opens and its best items by level.

Race and class

56 combos, 16 new in Forever

Which race can be which class in WoW Forever. NEW marks a combo Classic Era did not have.
Race	Paladin	Hunter	Rogue	Priest	Shaman	Mage	Warlock	Druid
Alliance
Human					Human Shaman is not playable			Human Druid is not playable
Dwarf						Dwarf Mage is not playable	Dwarf Warlock is not playable	Dwarf Druid is not playable
Night Elf	Night Elf Paladin is not playable				Night Elf Shaman is not playable	Night Elf Mage is not playable	Night Elf Warlock is not playable
Gnome	Gnome Paladin is not playable	Gnome Hunter is not playable			Gnome Shaman is not playable			Gnome Druid is not playable
High Order Skyborne	High Order Skyborne Paladin is not playable			High Order Skyborne Priest is not playable	High Order Skyborne Shaman is not playable		High Order Skyborne Warlock is not playable
Horde
Orc	Orc Paladin is not playable			Orc Priest is not playable				Orc Druid is not playable
Undead		Undead Hunter is not playable			Undead Shaman is not playable			Undead Druid is not playable
Tauren	Tauren Paladin is not playable		Tauren Rogue is not playable	Tauren Priest is not playable		Tauren Mage is not playable	Tauren Warlock is not playable
Troll	Troll Paladin is not playable							Troll Druid is not playable
Windshaper Skyborne	Windshaper Skyborne Paladin is not playable			Windshaper Skyborne Priest is not playable		Windshaper Skyborne Mage is not playable	Windshaper Skyborne Warlock is not playable

From the class records in the game data: Forever build against Classic Era. A cell opens that class's calculator with the race picked.