Cooking becomes a thing, foods like fish analogs and veggies roasted over an open fire are very popular, also we start useing our tongues to fish and along with hunting
You attempt to use the plants as light in homes. However, they need the rocks they grow on to survive, and you don't have a good method of determination for which rocks work-besides using them up. The demand quickly outstrips supply. However, experiments with fire are sucsessful, and you find that cooking removes parasites. Life expectency increaces by 3 years.
We start useing these plants for lights in homes, we start banging rocks together to make spears and make sparks to light this planet's equivilant of wood on fire
Several villages of mud huts are constructed. You do not have thatch here, but you use a mettalic substitue plant. You discover that this plant can cause sparks of light to emit from it under certain curcumstances. It grows near rocks.
also, we start building thatch and mud huts suspended on the sides of clifs(cus you know, birds)
Ok. You discover three species of edible plants, and a nice tame animal. It lives in valleys, and eats a sort of grass-like thing. It has 8 legs. It's meat is very savory, and goes well with one of the plants you found. What will you call this animal?
Center of the west continent, in a region that i'll call the Conethean Mountians, and first they will establish their civilisation and start domestication of animals and plants