That would be the time of hunters and gatherers.
Before farming and cattle domestication, people used to live off the land; hunting animals and collected edible plants and seeds for survival.
Clothes were often made from animal skins and furs.
For shelter; caves were used or structure were made from what was available.
How far back in time do you want to go, what kind of info do you need? If you're more specific i can give you more details.
