The secret to life, in those first few minutes, is to get to town.
Then you can go into the barn to get warm.
Then discover how to weave reeds (hover one reed over another, rt-click). This will give you FABRIC (to make jute pants and shirt and cap).
Move your "priest's cloak" to the COAT slot, so you can put on your jute shirt.
Go back to the barn as needed to warm up.
Then discover that 5 grass can be turned into HAY.
Make an extra jute cap, and discover how to split it into two FABRIC pieces. (One of these, with HAY, make SHOES).
You now have enough thermal protection to start collecting materials for a leafy bed. (Go back home to set up your bed)
Make a fireplace that looks like a ring of stones. Make a fire. Dig to get clay. Make a clay pot, and fire it in the fire. Go dip the pot into water (if you can't find water, go to town to get it).
The pot, with water, on the lit fire, can make meat broth, detoxify mushrooms, boil different foods, and boil bark in prep for drying it (for bark cup to drink broth and tea, make barkpack, canoe, etc).
Make your initial silver by finding arrowheads and snakeskins in old logs and stumps, going to town and selling them to a booth.
Or, take your chances and have someone give you stuff.