Well, considering everyone else is doing it, here is what I envision my culture beginning...
Small village groups, led by a single religious/military/political figure with absolute power. When children come of age, they are designated a life-long working position by this leader; this is at roughly 12, and the decision is made more "fair" through a series of apprenticeships, that begin at speech, through which they learn necessary information from the various people of the village. Those who show interest and aptitude at farming are more likely to be assigned to a farming position.
When assigned a position, they would work at this one task their entire lives, perfecting it to whatever degree they are capable of and teaching the young, unassigned children their expertise over the knowledge and skills essential to their life, such as assisting in harvest.
The people strive for balance in everything they do, something preached by their leader. This especially applies to food and other material possessions, which they do not attempt to hoard, as they believe wealth and poverty reduce their ability to assist the tribe. When an individual amasses a great amount of food or other possession, he or she holds a feast, inviting the entire village and using up all of the food in the process.
Lastly, expansion to another village only occurs when the leader of a village assigns a child to the position of leadership. The child is then banished from the village with proper supplies, expected to go and find another village and leader to be apprenticed under; when found, he then assists this other leader in his duties until seen fit to become a leader. Then, one of two things happens: either the master dies and the apprentice controls the entirety of the old village, or the older leader takes a full 2/3 of the people and provision to start a new village. This exchange of leadership both helps to ensure the success of the new village and to prevent stagnation of older villages. Beyond these two methods, no travel between villages occurs, and no over-arching hierarchy or group of these leaders exists.
Descent is patrilineal, and the ownership of all goods is questionable, as the leader of the village decide to whom all possessions go to when someone dies; this helps to ensure that farmers get the best farming tools, potters get a proper potters wheel, etc.
Well, that would be the condensed version of what I have been working on over the last few days. Origin doesn't really matter to me at this point; I am more worried about how my society develops than where it develops.