Following, I also cannot figure out how to make steel ingots or coal.

Coal seems just like any other rock, particularly marble, so you're probably gonna have a hard time to find it on your map if your vision is as bad as mine, but it is indeed there, alternatively, you can change the xml of the mining (bc it's ♥♥♥♥ in the normal version, half a day of mining for a single ore lmao), and make a mine by researching Mining. Steel is locked behind research and you'll need an advanced research bench (not a hi-tech, you'll only need some iron ore and basic components for it), which is itself locked behind the Alchemy and Engineering researches. After you got everything I said to this point, all you need is a furnace, which is locked behind Smithing, and smelt iron ore into iron ingots, then iron ingots into steel ingots and you're good to go. So, I recommend turning research speed to 200% in the storyteller settings lol.

valeu mano

Coal and iron can be found on the map, like it used to be with the vanilla ressources. This only works, if you create a new map with medieval overhaul installed. Therefore it can not be added into a running game. If you added it into a running game you either need to create a second settlement or work with mines.

Steel, on the other hand, must be crafted. You can make it as soon as you have completed the required research.

If you can't stand it, to search the whole map for resources - like i do - i can recommend the following mod: ZiTools objects seeker
with this mod you can search for items or ores on the map, but only if those things are visible to you. so if a coal vine is hidden in a mountain, it won't get highlighted.