I haven't shown you the "User interface" yet, so here's a typical one. I've tried to make them all look the same to make things easier. Here, I've clicked on the Advanced Furnace. It presents you with a list of "recipes" that it will do, and what the furnace will need to make it. In the above example, the first recipe is to make some Refined Lead, you get Slag and Sulfur Dioxide as by-products. On the left you can see you need Galena, which is the ore you need to extract Lead from and also some Limestone, which is a common ore you can find too. This is pretty much how real-life Lead is made, but I have bent science a little bit to make the game more enjoyable and less over-the-top-geeky-science!
You can also see from this, that the advanced furnace requires 5 KiloWatts of electricity, One steam turbine is enough to power two of these beasts, so don't go just plopping them down all over the place like Factorio, otherwise you'll need to hook up to the nearest star to generate enough power.
Each machine has a similar interface like this where you can choose the recipe and leave it to do it's thing.
Today I added a mini-wiki built right into the game, so that if you want to know how to make Sulfur Dioxide, you click the little icon that represents it, and it will tell you what machines make it (usually as a by-product), also how to build the machine that makes it. I'm hoping this little addition will help noobs get into the game without having to constantly refer to an external wiki page.