To change the way posts appear on your homepage, login and go to Appearance > Widgets. Open the Home section, and edit the settings for the “Recent Custom Post Types” widget. There, you can change the number of posts that display, reorder them, and other options.
This is a news post. You can add, edit, or remove news posts by logging in with the “Webmaster Login” link at the bottom of the page, and going to the Posts section.