Keep it easier for your readers to know where they are by enabling a table of contents.

Go to Settings → Design → Post and toggle on Show table of contents. On posts with several headings, a table of contents will be automatically generated. It can be toggled on by clicking the button in the lower left-hand corner.
See the following post to see it in action:
All the Styles
A preview of what your posts will look like, including the typography, media, and more.
