Open Source Content Management 
This is a sample blog posting.
If you log in to the site (the Author Login link is on the very bottom of this page) you will be able to edit it and all of the other existing articles. You will also be able to create a new article and make other changes to the site.
As you add and modify articles you will see how your site changes and also how you can customise it in various ways.
Go ahead, you can't break it.
Your home page is set to display the four most recent articles from the blog category in a column. Then there are links to the next two oldest articles. You can change those numbers by editing the content options settings in the blog tab in your site administrator. There is a link to your site administrator in the top menu.
If you want to have your blog post broken into two parts, an introduction and then a full length separate page, use the Read More button to insert a break.
Your site has some commonly used modules already preconfigured. These include:
Each of these modules has many options which you can experiment with in the Module Manager in your site Administrator. Moving your mouse over a module and clicking on the edit icon will take you to an edit screen for that module. Always be sure to save and close any module you edit.
Joomla! also includes many other modules you can incorporate in your site. As you develop your site you may want to add more module that you can find at the Joomla Extensions Directory.
Templates control the look and feel of your website.
This blog is installed with the Protostar template.
You can edit the options by clicking on the Working on Your Site, Template Settings link in the top menu (visible when you login).
For example you can change the site background color, highlights color, site title, site description and title font used.
More options are available in the site administrator. You may also install a new template using the extension manager.