This document provides guidance on writing an informal email or letter. It recommends including a greeting like "Hi" or "Dear" followed by a comma. The opening paragraph should acknowledge the previous correspondence and ask how the person is doing. Main paragraphs can discuss various topics using connectors. The closing paragraph lets the person know you need to finish and asks for a response. Common ways to close include "Best wishes" or "Love" followed by your name on the next line without a period.