How to install Joomla
Download Joomla and set up document root
Section titled “Download Joomla and set up document root”Download Joomla from joomla.org. After downloading, the resulting zip file should be in your C:\Downloads folder. Unzip this joomla.zip file – you should now see a C:\Downloads\Joomla folder. Move the contents of this folder to C:\MAMP\htdocs.
Create database
Section titled “Create database”Click on Open Start Page, then on the phpMyAdmin link. Create a database in phpMyAdmin and call it “joomla”.

Run Joomla installation
Section titled “Run Joomla installation”Go to Open Start Page, click on My Website 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 different user name for the administrator.

Complete the Joomla installation process. The following fields are the default for the MAMP MySQL installation: username “root”, password “root”, database host “localhost:8889”.
