You either study one of the eight Colour Lores of Magic (Beasts, Death, Fire, Heavens, Life, Light, Metal, or Shadows), a Witch Lore such as Hedgecraft or Witchcraft, or a Dark Lore like Daemonology or Necromancy. Upon learning the Talent, you gain one Spell of your choice from your chosen Lore. You may now memorise additional Spells from your chosen Lore for the following cost in XP.

You may normally learn only one Arcane Lore of Magic. Dark Lores are an exception: depending on your path of study (and with the GM’s permission), you may learn a single Dark Lore in addition to one of the other Arcane Lores. You can unlearn this Talent at a cost of 100 XP, but you will immediately lose all Spells linked to the Talent if you do so.

Core Book, Page 115