[ ] Seek an exchange arrangement with another Library or a Karak's archives to be able to make copies of their corpus (specify which, eg: Great Library of Marienburg, Great Library of Altdorf, Ancient Library of Carroburg, Karaz-a-Karak Archives, Karak Vlag Archives)
[ ] Seek an agreement with a Cult to have access to their libraries (specify which, eg: Verenans, Myrmidians, Sigmarites)
Seems like some very basic stuff and I think we should start with the easy ones. Say the Great Library of Altdorf and the Cult of Verena. Karak Vlag can wait, let's just lay the foundations properly by getting the regular old boring books that are necessary for a scholar to have on hand to consult when they're trying to understand the rare and esoteric ones.
EDIT: I actually expect some snide remarks from the Verenans about how this wizard is trying to start a great library and it's been years and she hasn't seen fit to ask their advice or consultation.