You begin play with knowledge of six 1st-level spells plus 1 per point of Intelligence modifier. Each time you gain a wizard level, you may add four spells to your spellbook without additional research. In addition, you gain a +2 bonus on all Knowledge (arcana) checks.
You can take this feat only as a 1st-level character.
1st-level wizards begin play with knowledge of three 1st level spells, and can add two spells per level to their spellbooks.