Configure basic site settings
Okay, you’ve got a site and a profile. One of the two most important settings you’ll probably want to customize right away is your site title and tagline. To get you started, we’ve given your blog the same title as your username, but that might not be what you want. And right now, you’ve got a generic tagline like “This WordPress.com Site is the Bee’s Knees” — time to change them.
In your dashboard, go to Settings >> General, and enter your site’s title and your new tagline. If you don’t want to have a site tagline or can’t think of anything to enter right now, just delete the text that’s there