When you login to your Backend ( Administration panel , http://localhost/joomla/administrator ) , you will find several menus and several buttons . To know what to do we should know how Joomla organize your website .
Concerning the content ( the articles ) , Joomla divides your website into sections , and sections into categories , and finally categories contain articles .
Obviously , you can not use joomla if you website tree can go more than 3 levels ( sections->category->articles ) , but you can manage by making links between categories . Note if you find yourself making a lot of links between categories , then know you shouldn't use Joomla from the beginning .
To edit your content , the home page of your Backend show some big buttons , add article , Article manager , Sections Manager , Category Manager. You also should see in the top menu , a menu item called content , and when you hover with your mouse , you will find all your content options , you can access them from any page you are in the Backend .

Click on Section Manager , if you have installed the sample data during installation , you will see Joomla default sections ( About Joomla! , News , FAQs ) . When you click on one of them , you will be able to edit the title , description , description image . Also you can select one of them and delete it , but first you should have deleted or moved all categories contained in the section .
To make a new Section , click on New , insert the title description if you want . That's it

Going to the second level of the Joomla content architecture , from the Backend home page , click on Category Manager , or from the top menu , hover on content , then click on Category Manager .
You will see a list similar to the sections' one , but every category has a field of the section that contain this category . Also you can delete any of them by selecting from the checkbox on the left , and click delete from the top menu buttton , but you should have first deleted or moved all article being in this category .
Click any category , you will see title , description as usual , but you will find a drop down menu of sections , to choose one them to make this category belongs to . Also you will the category order field, this to order the categories within the section .

Articles . The Backbone of Joomla . Click on Article Manager from the Backend home page , or hove on content from the top menu , and click on Article Manager . You will see a list of articles contained in your website as sample data . Click on any one of them to edit its title and content , and some extra fields from the right panel .

One extra thing , you will find Front Page Manager on the Backend home page , also when you hover on content , this to manage the articles on the home page of your website . On article manager if you click on any article you will see " Front Page" and two radio button saying yes and no . I think it's clear .

So , we explored the content manager of Joomla , we will try to explore the menu manager next post .
Thanks .

