Fiction provides deeply rich background material for the Pathfinder campaign setting: the stories tell tales about many aspects of the culture and peoples of Golarion and beyond. Pathfinder fiction is published both as serialized stories and as novels. A useful chronology of the various fiction products is found here: Pathfinder Tales chronology.
There are various ways of viewing the entire collection of Pathfinder fiction:
The weekly Pathfinder Tales web fiction series appeared free on paizo.com. Each week's entry (updated on Wednesdays) presented a chapter in an ongoing serialized short story by some of the industry's most respected authors and often featured the same characters appearing in the Pathfinder Tales novel line. Several months after serialization, web fiction stories were compiled and released in ebook format.