References
Direct reference material from Plaid Hat Games

PDFs - PvE
Chimera Rulebook 

 Red Rains Rulebook

PDFs - PvP
Ashes Reborn Rulebook 

 Ashes Reborn FAQ v.4 

 Ashes OP Rules V4 

 Ashes Reborn Primer 

 Dice Reference Cards (a.k.a. "Dice Power Reference Cards") 

 Printable Errata Cards