I'm looking at building a Saurian Shaman druid soon, but I'm trying to get some fluff for him. I'm thinking of making him one of the Mwangi tribes, but I can't seem to find much information on them beyond what is in the Core Campaign setting.
From what I can tell, this looks like a valid concept in setting, but I can't find much information beyond where they live and things like that. I can't find any actual culture on them. Granted, I don't have ready access to all of the setting books, but I'd like to find out if there is anything as far as their specific religion, weapons they might use, things like that. I don't mind picturing them like the Zulu tribes or something, but I'd like to know if there is anything unique in-setting.
Check out Heart of the Jungle and/or the Sargava gazetteer. They have the most information on the Mwangi that has yet been published.
You can also check out the PathfinderWiki
I believe there might have been some stuff on it in the Serpent's Skull Adventure Path about the tribes here and there.