I say maintain a factor of having to read between the lines while staying organized enough that it doesn't become tedious. I.e. journal might mention bandits in the country side so speaking with multiple farmers provides more clues that are reflected in the journal. However it works, I just don't want it to be like "go talk to farmer maggot, here's his house on the map and a golden trail of magical bread crumbs to show you the way, but be careful there's a monster on the way there, but not to worry here are his weaknesses and other stats. He'll also have an important note on how to get through the mysterious waterfall. Good luck P.s. wanna make out?"