Ringing Ceders

I am trying to figure out which content management software I should get to use for help managing all of the websites I am planning to put up. So far I have been thinking that it might be nice to use Joomla since it seems to have a lot of the features I need and can be tried for free. However, I am not always that quick to pick up on new computer programs, so I am wondering how hard it is to learn to use Joomla. Is there some sort of Joomla videos or tutorials that would be able to show me how to use it?