You don't edit the spellbook itself; you only edit that when you're adding spells to it.
Your daily preparation is under My Classes > Wizard > the Wizard Arcane Spellcasting section.
Currently Running: Pathfinder Second Edition
Currently Playing: Pathfinder First Edition, Star Trek Adventures
Former HL Games: D&D 4e & 5e, Mutants & Masterminds 2E & 3E, Savage Worlds
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