Everyone will probably have access to the Galatic Archive, the in-universe Wikipedia. Obviously, those on the Scientist path will have more in-depth versions and more tidbits to chew on as they research and unravel the mysteries of Nexus. That aside, what would the actual entries contain? Aside from the usual fare of physical description, disposition, culture, and maybe a little history, that is? Personally, I hope it would be something like this: http://kol.coldfront.net/thekolwiki/index.php/Monster_Manuel_(Entries) or just more like Kingdom of Loathing in general, really. That game is near and dear to my heart because of its expansive and hilarious lore and attention to detail. Pop-culture references aside, of course.