Each end will be notched like this, leaving some to attach to corner posts. Putting them together is the easy part. To be honest, if it wasn't raining I would go build a fire and get stuff done through the night.
nearby resources
I've setup a make shift quarry by camp. It's nice to have nearby resources. I'm separating the sand, gravel, rock and clay. The floor, stove, chimney and front porch will benefit along with drainage.