This module will display a search box. Help
The search component uses plugins to control which parts of your Joomla! site are searched. You may choose to turn off some areas to improve performance or for other reasons. Many third party Joomla! extensions have search plugins that extend where search takes place.
The syndicate module allows you to display a link that allows users to take a feed from your site. It will only display on pages for which feeds are possible. That means it will not display on single article, contact or weblinks pages, such as this one. Help
System plugins operate every time a page on your site loads. They control such things as your URLS, whether users can check a "remember me" box on the login module, and whether caching is enabled. New in 1.6 is the redirect plugin that with the redirect component assist you in managing changes in URLs.
The Joomla! content management system lets you create webpages of various types using extensions. There are 5 basic types of extensions: components, modules, templates, languages, and plugins. Your website includes the extensions you need to create a basic website in English, but thousands of additional extensions of all types are available. TheJoomla! Extensions Directory is the largest directory of Joomla! extensions.