Study and Knowledge Quiz

Rio gives you two quests that are somewhat related to each other: the Study quest and the Knowledge quest. Both require that you talk to Niachilo.

The Study Quest
The Study quest has you go to Niachilo  to get study materials. Open your bag and right click the blue book. This will leave you with study notes that you give to Niachilo. In return, he will give you a story to add to your Anthology collection.

There are a few reasons that you will want to put this quest into your dailies: you get socialite points for it, collecting all the stories from a single collection completes an achievement, sometimes you will also get a special gift - such as a lionheart scroll, and the stories that you collect will answer the questions that he asks in the Knowledge quest.

These books are transferable, so, if you already have it, see if a guildie needs it or you can sell it.

The Knowledge Quiz
One of the guild quests that many of you can complete from lv30-lv60 is the Knowledge Quiz; provided that you also have lv3 Socialite. This is a quick and easy one that I highly recommend that you do daily. You can easily reach lv3 Socialite by taking Rio quests whenever you can, [and doing the daily social quests in Lunagrant Woodland once you are able - the daily from Karthy could give you 200pts! <- now defunct as we no longer have access to this area]

The quiz questions that Niachilo asks come from the the stories that he gives you for completing the Study quest. You can hit L, choose Anthology, and click through the picture tiles at the top to find the corresponding story and the answer to your question. It is also located in the top right of the C menu. But unless you have the book that he is asking about, how do you know the answer to the knowledge question?

Well, you could guess, and wait the 5 mins to get a new knowledge quest from Rio if you guess wrong.

The other thing you could do is refer to this handy cheat sheet :)
I also put a link in the sidebar to make sure that it stays even handier.