This is a sample page. It is different from a blog post because it stays in one place and appears in your site navigation (in most themes). Most people start with an About page that introduces them to potential site visitors. It might say something like this:
Hello there! I am a bike messenger by day and an aspiring actor by night, and this is my website. I live in Los Angeles, have a great dog named Jack, and I like piña coladas. (And getting caught in the rain.)
…or something like this:
The XYZ Doohickey Company was founded in 1971 and has been providing quality doohickeys to the public ever since. Located in Gotham City, XYZ employs over 2,000 people and does all kinds of fantastic things for the Gotham community.
As a new WordPress user, you can go to your dashboard to delete this page and add new pages for your content. Have fun!