Assuming you mean how do you outline the structure of a chapter in a book:
The most important thing is to figure out the main point of the chapter and what supporting points you'll use to illustrate that main point. Once you have that figured out, you can start to play around with the structure of the chapter and how you want to present the information.
Some things to keep in mind:
- How can you break up the information into digestible chunks?
- What order makes the most sense to present the information in?
- Are there any subsections or side points that fit into the overall chapter structure?
Once you have a general sense of the chapter's structure, you can start to fill in the details. Write down what points you want to hit and what examples you want to use. Don't worry about getting everything perfect at this stage - you can always change things around later. The important thing is to get your ideas down on paper (or screen) so you can start to piece the chapter together.