You can learn spells from magic items.
Benefit: You can learn spells from spell trigger and spell completion magic items. You must study the item for 1 day/spell level you are attempting to learn. The item must be able to produce an effect identical to the spell you are learning.
After the period of study, you must make a Spellcraft check identical to copying a spell from another spellbook (DC 15 + the level of the spell). If you fail, you are subject to the same limitations as when failing to copy a spell from a scroll. The spell must be one you are normally permitted to learn.
Section 15: Copyright Notice – Advanced Feats: The Witch’s Brew