How To install Joomla
Download Joomla and setup document root
Download Joomla here. After downloading, the resulting zip file should be in your “~/Downloads” folder. Unzip this joomla.zip file. You should now see a “~/Downloads/Joomla” folder. Move the contents of this folder to “/Applications/MAMP/htdocs”.
Click on Open Start Page, then on the phpMyAdmin link. Create a database in phpMyAdmin and call it “joomla”.
Run Joomla installation
Go to Open Start Page, click on “MyWebsite” on the top menu bar, you should now see the Joomla installation process begin.
The “admin” is the administrator for this Joomla site. You can use a administrator user name other than “admin”.
Finish the Joomla installation process.The following fields are the default for the MAMP PRO MySQL installation, user name: “root”, password: “root”, database host: “localhost”.