Was is canola used for?

Canola is used for cooking like canola oil which is very popular these days.

Canola meal is often used as a cattle feed supplement

You can use for a lot of things. I personally use it for cooking. Also when your hands feel a bit rough pour some on your hand mixed with sugar and mainly wash you hands, scrub them, and wash it off....

Any oils labelled "vegetable oil" or "salad oil" are fine but, you could also use any light, neutral-flavored oil like safflower, canola or soybean oil.

Canola oil is just a little healthier, but any oil will work in baking.