Way of the Wicked
The island kingdom of Talingarde is the most noble, virtuous, wealthy and peaceful nation in the known world. The Talireans successfully adopted a united faith through the Church of Mitra, ruthlessly crushed underfoot the diabolic cults devoted to the archdevil Asmodeus, miraculously erected the Watch Wall to fend against the hordes of the north, and impressively forged a benevolent and productive society of trade, culture, philanthropy, and academia.
This is the story of how you burned this insipid paradise to the ground. It is only fair. They burned you first.
They condemned you for your ambition, for your strength, for your lack of compromise, for your vision, for your will to power, for your desire, for what they called “wicked deeds.” They branded you. They shipped you to Branderscar Prison. In three days, you die and Talingarde will be rid of you.
You have three days to escape and unleash your wrath upon the world.
For now, brood, and read the WotW player guide available here: https://elliquiy.com/pics/Way_Wicked_Players_Guide.pdf
And familiarise yourself with the D20pfsrd: http://www.d20pfsrd.com/
You may also want to check out the Pathfinder core rulebook. The SRD linked above contains all the rules for Pathfinder, and I generally find it easier to navigate and read, though that may be personal preference.