I've been trying to think of one or two good resources. The best I can do is some things which focus on different aspects:
Generally speaking, traditional crafts involve less tools but more workers and trades than you expect. So one shop with a master, three journeymen (day labourers) and two apprentices buys a hundredweight of iron and starts making table knives, churns out a few hundred of them, sends them to another shop with a waterwheel to be ground and polished, takes them back for final inspection, sells them to a third shop in another town which puts the handles on them and pairs some of the knives with scabbards and sells most of the finished knives to a wholesaler. Its very expensive for one shop, let alone one worker, to do all the steps.
And that first shop probably just has a handful of hammers and tongs and chisels, a forge, some small stakes and anvils and some small workbenches in it. Today people use power tools and vices to replace teams of helpers, and they make specialized tools to make up for not being able to practice one task enough to get really good at it.
Traditional iron and steel (like anything made before 1850) are really the element of earth, and you can see why they believed ore grew in the ground like trees. No two pieces are exactly the same. So you might have a favorite way of making a sword, but sometimes the pieces of iron you have don't cooperate, and you have to do something different that will still give you a product to sell. In that respect, its a lot like sculpting marble. Modern steels are a lot more predictable, so the smiths don't have to put together all those different pieces with different properties unless they want to show off.
Traditional crafts tend to be tied up with a lot of rituals and secrets, like cooking and baking today. So a swordsmith can probably talk to customers about what they want, and has their own way of talking through problems with people in the shop, but the customer does not get to hear the shop talk or talking through problems (and in a place with towns and shops, the swordsmith is probably fuzzy on how iron and steel are made and why different kinds behave differently). So in fiction, that gives you a chance for characterization: you can show the swordsmith talking one way to her client and talking another way to herself or other people in the shop.
