I use this tutorial : https://docs.moodle.org/26/en/Step-by-step_Installation_Guide_for_Ubuntu and jump to step 4.
On step 7, after chmod -R 777 /var/www/moodle, you have to open http://<your-ip>/moodle on browser for next installation.
i’ve got this error
showing that you don’t have php5-curl, php5-xmlrpc, and php5-intl. Do apt-get install php5-curl php5-xmlrpc php5-intl.
I skip for opcache-enable and click next. 
and moodle will automatically install all modules 
Run to next step on https://docs.moodle.org/26/en/Step-by-step_Installation_Guide_for_Ubuntu, Database setting and continue to Suggestions: Enable Zend OpCache/Change Document Root.
Moodle is somehow slow, you can use php cache and mysql tuning suggestion on http://moodurian.blogspot.com/2011/07/how-i-speeded-up-my-moodle-site.html.
Basicly you can use : https://raw.github.com/major/MySQLTuner-perl/master/mysqltuner.pl for mysql tuning. It will give you some good recomendation to my.cnf.
and : apt-get install php-apc
to cache everything.
Sunday morning 