During the crafting process there's plenty of things you can find in game; you can see exactly how much of an item you need to make for a recipe and the location to gather it in. However, the only thing this doesn't apply to are crafting materials that monsters drop.
This means you have to look online for where to find these items rather than being to view them in game, which is why i suggest a "hunting" category (or something similar) to the gathering log which would detail what enemies drop what items and where they could potentially be found.