This is Quick Guide/ How to for "Installation Moodle 2.0" on Linux operation system.
My System: Ubuntu 10.04 LTS Lucid with Apapche, MySQL, PHP.
Downlaod Moodle 2.0 from http://download.moodle.org/
All other steps are same which we used to install any LAMP ( web based ) Open Source application.
Just for Note:
Create database. While creating database create it with "Change Collation: utf8_general_ci" in phpmyadmin.
After created database using following command you can alter it for unicode support.
ALTER DATABASE moodle DEFAULT CHARACTER SET utf8 COLLATE utf8_unicode_ci;
Also you have to install php extentions php5-curl, php5-intl, php5-xmlrpc.