To get an idea as to how a page is starting to look as you begin to enter content into it, you may use the Live Preview feature in Craft. Live Preview updates as you type, helping you make layout and design decisions as your content is being created.
Some entry types may appear in multiple places within your website. For example, a News article may live on its own page, on a news collection page, and in a "Related Article" secton on other pages. To view how an entry is displayed on multiple pages, use the dropdown found above the preview area to switch Live Preview’s preview URL to the other locations.
To exit Live Preview, use the "Close Live Preview" button in the top-left.