So you have trouble finding these resources?
Not for very much longer.

Flax is a plant that can be found in only two seasons:
In spring while it is still growing.
And in summer when it can be harvested by hand or with a sickle.

Help is a plant that can be found in three seasons.
It'll be growing during spring and summer:
And it can be harvested either be hand or with a sickle in autumn:

Bronze is a wonderful metal, but has to be made by creating an alloy of Copper and Tin.
So first up is finding copper.
They're rocks with green bits sticking out (patina), and can be mined with any pickaxe.
Next we need Tin, which are rocks with silver bits in it.
And for that, we need a copper pickaxe.
We can either liberate the Sosogi region in order to craft it at the workshop.
Or you can be lucky enough to find one in a cave.
Then we need to return to our workshop to build a smelter from the radial menu (furniture->production builders->workshop).
After we put it down, we can fill it up with copper, tin, and firewood, and it will slowly turn it into bronze.
We then need to liberate other regions in order to make use of the bronze.

On paper, of course.
So we need to make paper.
And the three most important things for that are the papermaker building, paper bark, and lots of water.
You should know how buildings are built by now, so lets get to the paper bark.
For that, we need to get logs from mulberry trees.After that we debark the logs at a woodcutting station, and throw it into the bark boiling barrel.
That will slowly turn the bark into boiler paper bark, which we then need to process into paper pulp at the paper beating table.
Paper pulp then gets soaked in a paper soaking pool, the resulting paper mixture then formed into sheets at the papermaking tool, pressed at the paper press, and dried on a drying rack.

Mind you, this map is not intended to be a complete guide to every single spot for each resource.
But it will give you an idea of what to look for.