As a beginner, I'm going to build a good-looking video streaming website, but want the easiest way to build. I'm looking for a user-friendly CMS to create the main structure of my site. Please have a look at: http://www.threehosts.com/ratings/comparison-software/wordpress-vs-joomla-vs-drupal.html. As you can see they have provided a collection of websites created with WP, Drupal and Joomla. How can I understand if these websites are really built with the mentioned software? And how can I know if they have used any template for their sites or they have only used the mentioned CMS? Because some of these websites look really great and professional and due to I'm on a tight budget I don't want to pay for any template or theme.