Typically, Joomla will lead your site visitor to a category content in three steps. Between the Main Menu and the actual content, there's a secondary page to show category contents. You can see how this works in the following set of screenshots:
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A visitor clicks on a menu link. |
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They are taken to an overview page with article previews inviting them to click Read more links. |
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They click to read the full article. |
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As you can see, what's on the home page and the overview pages (and how it's presented) is vitally important to your site. It's the teaser texts, images, and hyperlinks on these pages that offer your visitors a first glimpse of the actual content. Of course, people don't always arrive at your site via the home page. Search engine results might take them directly to any page—including overview pages. One more reason to make those pages as enticing as you can!