for each object you have a window on the right which tells you what items you need for crafting - click on that and you'll find what skills and other items are needed for those
if you'd drop in at sling page that you'll need Leather working skill you'd prolly experience players that need the full explanation for the whole process - hunting, butchering, drying, tanning and so on - do you want to explain on the sling page how to craft a stone axe you'll need for butchering too ?
Just grab a piece of paper and try to write down how you'd do the "sling process" - i guess you'd realize the way the RoB Wiki is done is a good way to do it
(not to forget different people had been putting some thoughts and discussions into it already)
i'm not into helping peoples lazyness not to read, search or look deeper into the RoB Wiki ... or even not going down to the roots of playing games: trial and error