Just Enough Items
Just Enough Items is a mod that works best when used alongside other mods, but it serves it’s purpose just as well on it’s own.
What it does is that it allows you to open up the crafting menu to view an item you would like to craft, and then shows you the recipe of all the ingredients you would need to craft that item. But it also goes a bit further by then allowing you to learn how to craft each and every one of those ingredients as well.
This is especially useful when using a lot of mods together, as it allows you to work your way from the ground up when crafting more complex items without having to resort to using a Wiki every few minutes.
You can get the Just Enough Items mod here.