I posted this question in groups.io and the response I received sent me here.
I have tried to create a Living Grimoire Inquisitor but there are issues with spell casting. Living Grimoires cast spells differently than regular inquisitors and that gets acknowledged on the character sheet, but then it also shows [NOT IMPLEMENTED]. This affects the ability to pick spells to add to the spellbook as well as preparing spells. In the spells chart it says that I should be able to prepare level 1 spells but when I go to pick a spell it does not let me add it to my spellbook.
Living Grimoire is an archetype that comes out of the Horror Adventures book. I have attached my character to this post if that helps at all.