Open with the point, not a warm-up. The first paragraph is what a reader sees before they decide to keep going, so it should say what this post is about and why it matters.
First section
Body copy here. Plain Markdown works: bold, italic, links, lists, and blockquotes.
Second section
Fenced code blocks get syntax highlighting automatically:
export function greet(name: string) {
return `Hello, ${name}`
}Wrapping up
Close with what you want the reader to take away.