It sounds as if you might be confusing pages and posts in some way.
Pages are the basic infrastructure of your website. For example, I have an about-me page for my bio, I have a page that displays all my books, with links to previews of each one, I have a members-only page for email list subscribers, and so on. Pages are normally visible through your menu structure, but note that you usually need to add them to your menu manually. Normally, something people may refer to over time should be a page.
Posts are for announcements (like new releases or sales), giveaways, informational articles related to your writing or something else (I sometimes do book, video, and game reviews), and so on. They may be very important when first posted (hence the reason some WordPress sites use the blog posts page as their front page), but they tend to lose importance over time.