I wish someone had written an article like this when I first started with Joomla. It would have saved me a *LOT* of time. The first thing that Joomla does, whenever it loads, is to check and see if an ItemID exists for a given page. Normally, a Joomla link will include an "&ItemID=" statement, but not always. If it doesn't, then Joomla will look for a match in the database.
- Access Control (ACL)
- sef URL
...we will explain each in detail below.