Here, you can view tips that help you out in the beginning stages of the game, and read them later on as well.
The rumors section, however, was from the GBA classic and does return in Grimoire of the Rift. This is new to this video game and wasn't present in Final Fantasy Tactics Advance. While on the surface this may not seem to affect the gameplay, simply reading a notice might open up new quests to accept in the Quest Roster. Here, you can also view notices, which explain about all the happenings in the world of Ivalice. To view the current lists of quests you've accepted, press Current Quests. Following this, you will then be given access to this mission, and whether you fail or succeed depends on your skill. In the pubs, you can navigate the missions and accept the ones that you wish to partake in. You'll find a variety of pubs in the game's multiple different locations.