Well I'd start by using my pocket knife to hammer at the air above the ground after gathering a few logs and rocks. Once I have erected my Town Center by doing that I can start to magically spawn people by chucking 50 food [using a completely arbitrary unit of course] and waiting for a minute or two.

Of course I'd soon need to do some more air hammering to build a pair of houses, bringing the total population up to fifteen while simultaneously looking around for any stray sheep or forage bushes.

If I find the bushes first more air hammering awaits me, as I need to build an entire mill so I can collect the berries. Fortunately the sheep can be led to my Town Center and slaughered to produce still more people.

Of course I'd need to stick some of my people on wood as well, and throw together a lumber camp, but in no time at all I will be ready to advance the the Feudal Age and bum-rush anything close to me with a Triple S Flush [Spears, Skirmishers, Scouts].