Do not try to learn from these Tutorials. Most of the code does not work because Joomla 1.6 has changed. For example the class JQuery now is called JDatabaseQuery.
You need Joomla! 1.6 or greater for this tutorial.
Joomla! 1.6 is constructed using three different applications:
The installation application is used once. The administrator and public are used through the concept of components. Each component has two entry points:
Both are called com_componentname/componentname.php (the com_ prefix is a historical trace)
Articles in this Series