How to write essay on different essay topics

Where do you start when you have a list of ideas to write about? Start with your topic and then ask yourself some questions. What kinds of questions? The kind that are only limited by your creativity and the scope of your argumentative essay topics. Here's an example: "Should Halloween be banned?" I need to answer these questions before I decide what my essay is going to look like. Should I write about historical Halloween traditions, or maybe postmodern Halloween costume trends? Is it cultural appropriation or a celebration of our own heritage? Surely one answer won't suffice; perhaps I should break up the essay into several subtopics. Here's another example: "What happens if you don't go to university?" This is more of a general question, so we can probably throw it right into the middle of the essay in paragraph two or three.