"Oh, do you know of a rank I can take that will let me read ten books at a time?"

"Not yet." 

"Maybe if I invent a magic of my own it will be something to do with information absorption and organization."

"Oooooh. The librarians will love you."

"They better!"

"If I were to invent a whole new kind of magic...I don't know, it's hard to say without knowing very well what bases the existing ones cover. But probably something based off of dream-walking, that seems like a reasonable comparative advantage."

"What's the deal with dreamwalking?"

"I can go into people's dreams and sort of wake them up into lucid dreaming and stuff."

"Huh. I think digicasting is also a little like that but I'm basing this off having glanced at it before deciding I couldn't afford it while I was doing my build."

"Huh. Maybe digicasting is based on both wulong and lilin stuff, then. See, this is why I felt like not knowing so much stuff made it harder to say what I'd invent."

"We should go read our books and have more basis for our ambitions."

"Yeah! --Admittedly my books are mostly about Hell."

"It's a reasonable first priority for you! And presumably makes it sting slightly less that you must read one at a time."

"Yeah I never had that problem with Holocaust books either." 

"I... meant more that if they're mostly on one topic you aren't torn on which topic to learn about first, but that too, I suppose."

"--Oh yeah that would be the obvious read, sorry." 

"Trauma!" Emily says brightly with bonus jazzhands. 

May wryly jazzes her hands right back.

"Fortunately, the guy who found Emily after the accident knew some Consortation. Anyway! Books are cool."

"They sure are."

May goes back in to her dorm through her window and starts on the first book she grabs out of her landscape to avoid having to pick. It's a Lucasta book.

Once upon a time there was a human girl named Lucy Walton. Then she had a natural awakening during the course of getting caught up in an Outsider-related incident severe enough that the Veil didn't protect her! This had Predictable Bad Consequences, namely, a siren witch named Lucy Walton who was now severely Outsider-tainted. She proceeded to climb through the magical ranks of, among other things, Monstrosity, until she hit rank five of that and the goddess Lucasta ensued. This would have been Very Bad, except that then the Celestial Code happened. 

Lucy Walton is now most often seen dealing with Outsider-related incidents, on account of being immune to Outsider influence now (here is a prayer to say to Lucasta if something Outsider-related happens and you don't have any better options than prayer), and checking in with warlocks of Lucasta, of whom there are a number. Several but not all of them have elected to form and participate in a formal church structure, which has yet to determine a permanent formal name for itself, but which is referred to by various people and groups by various titles, the three most prominent of which are "Lucastanism," "The Starfish-Throwers," and "The Temple of Obstinate Beneficence." 

The primary tenets of Lucasta's faith are "people suffering is bad," "yes even if they are bad people," "I REALLY REALLY MEAN IT," "doing good things for other people is really important but, also, don't eat your seed corn," and "doing good effectively is important but even curing obscure diseases in charismatic puppies is a positive amount of good." 

Welp. Looks like May is going to need at least a first-line plan for dealing with Outsider shit, ideally one that is superior to "prayer", though she does note the prayer to have it on hand. Is there a formal church structure on the Arcadia grounds that this author knows about?

If the author knows of one they don't think to put it in the book. It does mention the location of (so far) Lucasta's main temple, in a city on a parallel Earth called "Sunspot" in a geographic area roughly equivalent to Alsace. 

Gosh, parallel Earths.

Where does the Lucy Walton... fork...? live now, does it say?

She spends a lot of time traveling around doing things; she is known to crash sometimes at the temple and speculated to crash sometimes in Lucasta's afterlife. Her mailing address is at the temple but probably someone filters her mail for her.