Pahlava reformed gov't question

[MerlinusCDXX]

I apologize in advance for any noobishness this thread exudes.

on getting the Pahlava reformed gov't i see that "settled aristocracy" is one of the requirements, yet I've built the "warlords herds" but haven't yet been able to build the settled aristocracy yet. do I need to build reformed pastoralism first or upgrade to a large settlement, and yes I've read the build tree document but it is kind of confusing to a noob like me.

the reason I'm asking is that I've managed to screw this build path up several times in my current campaign. I'm doin' pretty good with my HA and Katank army but I wanna see the shiny new infantry.

ps- is there a map of provinces that can get the reformed Parthian gov't floating around anywhere?

EDIT: nevermind, I figured it out myself, go ahead and lock this thread, send it to the graveyard...whatever