Techniques can lead to new spells, yes.

[Loki shifts from a crouching position to a sitting one so he can leaf through the book.]

And she did not return said book? Isn't that the purpose of a library? Borrowing books and returning them again?

[Not that he frequently returned books but...details, details... Finally he places the book next to him.]

A bit less useless than I thought it would be. Excellent choice, Billy of New York.