To add a bit more dimension to Brook's words, champ- think of it on this level: making toast.

The taste of toast varies GREATLY depending on which brand of toaster you use. What setting you place the toaster on. How many times you push the handle down. The size and thickness of the bread you insert into the slots- not to mention the type of bread it is. Next- to butter or not to butter? Jam/jelly, peanut-butter, cheese?

Now think in those terms for every food/dish/recipe in existence. And there you have what it is that Moms and grandmas learn and chefs learn and develop over a lifetime. Hard to learn all that in an online course. It takes several loaves of bread to learn how to make good toast!