RuyanVe |
Greetings, fellow traveller.
You can find more info in the AP Second Darkness, specifically #13 (Shadow in the Sky).
Otherwise, there is always the pathfinderwiki.com.
Ruyan.
Urath DM |
Both RuyanVe and Bellona have mentioned the main sources. You may want both, in order to have a PC-friendly and a GM-friendly view of things.
In addition, Pirates of the Inner Sea has some material on Riddleport's pirate population, and Inner Sea Magic has the Cyphermage prestige class. The Varisia player companion has a brief blurb on each of the main cities, including Riddleport, as well as a nice panoramic view image of the city.