The following optional rules from Pathfinder Unchained will be in use during this campaign. I will give everyone copies of these rules as appropriate.
The Barbarian, Monk, Rogue, and Summoner have been reworked.
Rules to make the Appraise, Craft, Handle Animal, Linguistics, Perform, Profession, and some Knowledge specialty skills more useful
In this new system, characters unlock additional abilities when they attain 5, 10, 15, and 20 ranks in a skill. Also ties in with the reworked rogue.
Alternate Craft and Profession Rules
Rules that tie in with some of the Kingdom and Downtime rules to make these skills more fun and interesting.
The following Rules from Pathfinder: Ultimate Campaign will be in use.
Kingdom and Downtime Rules
These rules can be found on the Pathfinder PRD located here.