Pages are fundamentally the same as Posts in that they both have Titles and Content and can use Wordpress theme formats documents to keep up a predictable look.
WordPress is one of a kind. Making your website very easy, for people to access your important pages and post, is one thing you should look out for when having a WordPress website.
Customizer, as the name suggests is used to customize your website’s appearance. You can use the Customizer to modify your website’s appearance settings.