Look at this outline: Anyone can make a cake

I. Ingredients

II. How to mix

III. How to bake

You could correct this outline by changing

"Ingredients" to "What to buy for ingredients."

Explanation:

“the iliad” (gr: “iliás”) is an epic poem by the ancient greek poet homer, which recounts some of the significant events of the final weeks of the trojan war and the greek siege of the city of troy (which was also known as ilion, ilios or ilium in ancient times).