You can arrange your pages in hierarchies, for example you could have an “About” page that has “Life Story” and “My Dog” pages under it. There are no limits to how deeply nested you can make pages.
Some themes have custom templates you can use for certain pages that might have additional features or custom layouts. If so, you’ll see them above.
Pages are usually ordered alphabetically, but you can put a number above to change the order pages appear in. (We know this is a little janky, it’ll be better in future releases.)