I have the CRB, but the fault is mine for not understanding the rudiments of creating low-level NPCs; cookie-cutter opposition for the purpose of being tossed in front of my PC's swords and spells.
I understand there are stat blocks involved. I know of an NPC generator that does the work via browser, but I don't feel that will teach me anything. Is there a step-by-step primer that helps explain the creation of general-purpose NPCs?