Do you mean a school book or books/scores for the set songs? What specifically are you trying to study?
I recommend writing out your own notes in tables for Set Songs, and practicing exam questions for the composition paper. Writing out the essays onto pages/typing them and printing them is a good idea.
Use flashcards too! Flashcards are good for learning off different sections/movements in the Set Songs (For example, Gerald Barry's Piano Quartet No. 1 has a lot of sections so writing up a summary of each section on a flashcard can help learn them off.)