In the Dashboard of your blog, you have the option to create ‘Posts’ and ‘Pages’.
‘Pages’ in WordPress are for content you would like to make available all the time. Many blogs have an ‘About’ page, for example, which is always accessible via a link on the front page. When you create a page in WordPress, a link to it is usually created for you automatically on the blog’s front page.
‘Posts’ are like entries in a diary. In a standard blog setup, posts are chunks of content which appear in chronological order on the front page of the blog. Each new post appears at the top, and pushes the older posts down the page.