Pages are main part of the WordPress and this makes the WordPress a solid CMS tool. You can manage all pages from Admin > Pages section. If you are absolutely new to Wordpress, please check the Getting Started with WordPress.
Note: Once the page is created, it should be added to menu via Appearance >> Menus if you'd like it to appear in the navigation on website frontend.
A number of custom options is available for any page created. Once you are in a specific page in admin panel, scroll down until you see the custom options block illustrated in below Screenshots. We will go through options one by one:
Don't know what is this options for? Read the following.