Guy
There are literally thousands of free Joomla 'skins' available and many commercial examples for sale - although you'd better get used to calling them templates!
There's also a program available called Artisteer (
www.artisteer.com) for the creation of templates - and not just for Joomla - it'll handle Wordpress, Drupal, Blogger as well as DNN. It costs about $US140 from memory - less than you'd pay to get a copy made for you I would have thought.
Joomla takes some getting to know - especially if you have to drop habits learned elsewhere, but once you get the hang of it, it's pretty good.
You will search for an awful long time to find a better training resource than this site - and probably come up short then.
Have a crack at making a site or two - download Joomla and run it locally on WAMP or XAMPP and follow the Basics videos step by step. They are an excellent and comprehensive guide - and no Richard doesn't have me on commission!
Good luck
Ian