1. He has read the novel so he knows the flow of the story and the major plot points/direction.

2. He gets a status panel which has:

a. An affection panel which lists all the characters he has interacted with and their degree of affection towards him and a few other notes as well.

b. A mission panel which lists upcoming missions like "Avoid getting poisoned". This in itself is incredibly broken as these missions tell him in advance what challenges he's about to face. Like the mission for avoiding getting poisoned tells him that in the near future someone will try to poison him. The other broken thing is that he gets rewards for completing these missions and they can be pretty much anything. His first reward for basically exploring the status panel was a broken space-storage device that store items. Then for another challenge he gets a silver spoon, which he could use for avoiding poisoning in an upcoming mission. Then he got a letter writing sets along with seals of all the major noble houses in the kingdom as well as the royal family, so he can forge letters from them.