If you want to have the option of selecting what stories appear on the home page (and you probably do), you need to create a category that says “Home” or something similar.
Next, go to Settings on the left menu and click on “Front Page Manager.” Look at the categories list and make sure that the “Home” catagory is the only one checked. Next to “Max posts to display” put in the number of posts you want to have on the home page.
If you select four, as in the example above, the four most recent posts that have the Home category check will appear on the home page. The fifth mos recent will appear on the section page (such as news or sports).