Another thing that would be extremely helpful is a "crafting list" of sorts, to know what objects require what skills, crafting tables, and requirements to be made. For example, how the hell does one make nails? Yes, I know its probably pretty easy and i'm dumb for not figuring it out, but in a game so complex like yours, people will most definitely miss stuff like this. If there was this list, then I would be able to see what skill and crafting table is needed to make them to begin with.
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I don't see any reason why not. The game already has a bestiary. Having similiar system for items seems reasonable.
I feel like right now, most crafting recipes make sence, since there is not that many of them. The nails for example, can be bought from a blacksmith and he also teaches you how to make them. Said blacksmith also has every crafting station he needs. Furnace for smelting ore outside his house and an anvil to make items out of metal.
Same goes for most crafts. Farmer has a seed bench and he and the hunter also have an oven. Machinist has a lathe and the herbalist has an alchemy table.
It might seem overwhelming at the start and the lack of explanation and tutorials doesn't really make things better, but the world is not that big and you will find all crucial trainers and crafting stations quite quickly.