Eldar Path
After the Fall of the Eldar those Eldar who had managed to save themselves upon the Craftworlds underwent a complete social reform. Their lives would no longer spent in pursuit of their wishes, pleasures, and wanton natures. This attitude had led to the Fall, and the creation of Slaanesh. Instead the invidual Eldar would choose for himself a discipline, a Path, and would focus himself upon it. This path would be studied and eventually mastered. Then the Eldar would choose a new path and the cycle would begun anew.
There is an unknown number of paths, each of them with surther specialisations. All Eldar who tread them must be cautious, for all of them are dangerous for the Eldar mind. Some Eldar focus to such an extent upon a path that he becomes unable to leave it upon completion. They will continue to tread this path until their death. This fate is a terrible one for the Eldar, and such individual are said to be lost upon the path.
The Path of the Seer is the most treacherous and complex of all. Its members are the mighty psykic Warlocks. The Spiritseers are specialists in the handling of Spirit-stones for the raising of the Wraithguards and Wraithlords. The Farseers are those who have lost themselves in the path of the seer.
The Path of the Warrior. Its members are the Aspect Warriors. There are several types of them, some even unique to a single craftworld. The most widely known are the Dire Avengers, the Howling Banshee, Striking Scorpions, Fire Dragons, Swooping Hawks, and Dark Reapers. An Eldar who loses himself upon this path becomes an Exarch. It must be mentioned that the Eldar Guardians are not treading this path at all. They are following other 'civilian' paths, being summoned to fight for the Craftworld.
The Path of the Artisan is a relativly common path.
Crystal Seers
Bards of Twilight