A Joomla site is just an empty shell without an active user base
This tutorial will help you understand the four user groups that are built in to Joomla
The first user group is the Registered group. This group does not have any kind of access to write, edit, or publish articles on a Joomla site
Next, we have the Author group. Authors are allowed to submit content to a Joomla site. They can edit their own articles, but no one else's; they cannot publish content
Typically, when logged in as an author, you'll see links such as these appear

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The third group is called Editor. Editors can edit other people's content as well as their own. They still can't publish anything, however
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You'll notice a new icon has appeared next to each article

1) Click the link to edit this article
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Scroll down
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Notice -- there is no button here to change whether this article is published or not

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Let's switch to the final user group, Publisher
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This option has appeared for us now

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Aside from that, a Publisher is no different than an Editor
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Every Joomla content item must be published before it is visible to everyone, so publishers get the final say for content posted to a site
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This is the end of the tutorial. Now you know all about the four Joomla user groups