What's the mod called that shows you how to craft stuff on Minecraft?

NotEnoughItems Mod.

I think it is called Shapeshifter mod. I do not know if it is correct.

Not Enough Items switched to recipe mode can show you how to make anything registered with it that also uses a crafting table or machine block. It can't show you what those things actually do, or how to make multiblock structures.

Too Many Items is a competing mod that basically does the same thing.

It's called Notenoughitems mod duh!