To improve the performance of a Joomla! site it is recommended to enable cache.

This can be done easily from "Global Configuration":

1. In the backend Joomla! administrator panel head to Site -> Global Configuration -> System
2. In the right panel you will see the "Cache Settings" tab: select "Yes" for cache and save the changes.
3. The "Cache Time" can be changed according to your website needs.
   If the site content updates often it is better to set a lower cache time (news website, sites with a shopping cart)
   

The background color for the Joomla! beez template can be changed by editing the position.css file (the purple color)

To find this file, in the backend administrator panel head to:

1. Extensions -> Template Manager
2. In the Template Manager, select from the list the "beez" template and click to edit.
3. Now, click on the "Edit CSS" icon from the right panel.
4. From the list with css files select the position.css and edit it.
   
5. At the beginning of the css file you will find the css property that needs to be modified:

    body
   { background: #F2E3ED;
   color: #000000; font-family: arial, helvetica, sans-serif; font-size: 100.1%; padding: 0px;
   text-align: center;
   }

6. Just replace the background property: background: #F2E3ED with other color.
   For example, if you want a white background for the beez template use:  
   

   background: #FFFFFF;

To create a new menu item in Joomla!, in the  backend administrator panel :

1. head to Menus -> Menu Manager
2. select the menu for which you want to create an item and click on the "Menu item" column to edit. A list with all menu items will be displayed.
3. Click on the "New" icon to create a new menu item (the green icon from the right panel).
4. There are a few types of menu items. If you want to link to an article choose "Internal links" -> "Article" -> "Article Layout"
5. Write a title for the menu item; if you changed your mind, you can select other menu where you can display the item.
6. Don't forget to choose the parent where you want to be included the new item.
   

Whenever you need to delete a super administrator user account in Joomla!, if you do it in the classic way (select the super administrator and click "Delete") a message will be displayed in the backend panel saying: "You cannot delete a Super Administrator."

To be able to do that, first you need to change the Group that it belongs to from "Super administrator" to something else. You can choose from "Administrator", "Manager" to "Registered" user. Changing the group means changing the super administrator rights.

Now, the super administrator can be deleted by selecting the user, than clicking on the "Delete" icon.

If the administrator password has been hacked, you are locked out and you do not have access to the Joomla! backend there is no need to be desperate: you can set a new password using phpMyAdmin.

1. Access phpMyAdmin (from cPanel)
2. In the left panel, access the Joomla! database
3. Now, in phpMyAdmin are displayed all Joomla! tables. Look for the jos_users table (the tables are alphabetically ordered) 
4. Click on the jos_users table and Browse. Here you will find the administrator user.
5. Click to edit the administrator user. For the 5th field "Password" select MD5 Function, delete the value and write a new password. The password can be modified later from the Joomla! backend
6. Hit the "Go" button to save the changes.
   

To hide the menu title in Joomla!:

1. In the backend panel head to Extensions -> Module Manager. 
2. Edit the menu  (main menu, resources, key concepts, etc)
3. In the new opened window change "Show title" option to "NO".

The title can be changed for all default Joomla! menus in  the same manner: User menu, Top menu, Resources, Example pages, Key concepts.

To hide the Joomla! main menu we will follow the same steps as in the case of hiding the login form:

1. In the backend panel, head to Extensions -> Module Manager
2. In the Module Manager there is a list with all modules for Joomla!. As default is enabled n the backend.  Check the "Main Menu" in the list and click to hide it (disable).

Follow the above steps when you want to disable other modules from the Frontpage like: breadcrumbs, polls, who's online, advertisment, banners, etc.

When the Joomla! login form becomes unnecessary for your website you may want to hide it.

Let's see how:

1. In the backend panel click on "Extensions" -> "Module Manager".
2. Look for the "Login form" module, select it and click to disable.

Besides the login form you will find here other Joomla! modules like: Polls, Main Menu, Footer, Resources, etc that you can disable in the same way as the Login form for Joomla!

The Joomla! footer, by default includes information about License and Copyright.

If you would like to remove these information then look for the following file to edit, located in /joomla/language/en-GB/en-GB.mod_footer.ini

and remove the text that appears after "=" sign in FOOTER_LINE1 and FOOTER_LINE2 :

FOOTER=Footer
FOOTER_LINE1=Copyright ©

1. In the Joomla! backend administrator panel, head to "Menus" -> "Menu Manager"
2. Edit the "Main menu" (the "Menu item" column)
3. In "Menu Item Manager", click on the first item "Home". In the right panel you have Parameters (System). In the "Page title" tab you will find the text that you want to change: "Welcome to the Frontpage". You may delete it or replace it with your own page title.