Looks like this site is created using <a href=”http://www.phpbb.com/”>PHPbb</a>, another potential content management solution is caled <a href=”http://www.dotnetnuke.com/”>dotnetnuke</a>.
These are very easy to use once installed and require little knowledge of HTML coding and web page design since they are generally pretty generic out of the box.
The look of the site, however, is mostly graphics design stuff. Photoshop or some other graphics editing software will be helpful in this area in addition to knowing how to use the content management software.
Here are some tutorials I found after taking a second look at the answer:
<a href=”http://www.phpbb.com/support/tutorials/”>http://www.phpbb.com/support/tutorials/</a> (Flash tutorials)
<a href=”http://www.siteground.com/tutorials/phpbb/”>http://www.siteground.com/tutorials/phpbb/</a> (installation and administration tutorials)
<a href=”http://www.easytutorials.org/phpbb_tutorials.html”>http://www.easytutorials.org/phpbb_tutorials.html</a> (General How to’s for common questions)
<a href=”http://webnet77.com/flash-tutorials/phpbb2-admin/index.html”>http://webnet77.com/flash-tutorials/phpbb2-admin/index.html</a> (tons of interesting tutorials)