The document discusses key considerations for writing effectively, including establishing a main idea and purpose, choosing an appropriate form or structure, and utilizing relevant text features. Specifically, it notes that authors should determine the main idea they want to convey, the purpose for writing (e.g. to persuade, inform), and a form that suits the purpose and idea, such as an essay, list, or pamphlet. It also lists various text features that could help achieve the purpose, such as titles, subtitles, examples, statistics, and multimedia elements.