==Steel and flint==
If you don't have a [steel and flint], making one is going to be a real tough proposition. Until you do have one, you will be unable to use a forge or oven, or (most important) unable to make charcoal piles.
Steel and flint requires steel lumps. To make steel, you need charcoal. The easiest way to get charcoal is to build a [[charcoal pile]]. But, since you don't have a steel and flint, you can't light it! What to do?