Learning How to Use Joomla
It takes a while to learn to think like Joomla thinks.
Fortunately, everything you need to know is available on the internet. There are some wonderful resources available online to help you get through the initial learning curve of this powerful system.
I've put together a large collection of links to Joomla training resources. Start with that list in my links directory.
And, I've put several of my favorites and most recommended tutorial sources below. Some of these sites are free. Others have a very reasonable charge.
There are a lot of very good Joomla tutorials available on Joomla Tutorials. This site by Brad Baker, one of the Joomla Core Team and a principal of Rochen, a premiere Joomla hosting service.
They have a series of animated tutorials here: http://www.joomlatutorials.com/joomla-15x.html.
Compass Designs has an excellent collection of tutorial articles. They are well organized, and well written.
And you would expect this to be so since the staff there are authors of several Joomla user's guide. Plus, he has a more comprehensive user's guide for sale on his site. Visit them at the Compass Designs tutorials here.
Sean Cook and his team at Salyris Studios have put together a good collection of video based Joomla tutorials. They are well organized and include tutorials on some of the more common components and add-ons. Very helpful stuff here. http://www.joomlatutorials.salyris.com/
Joomla for Beginners is a great site with a lot of Joomla video tutorials. You can even download them to your computer so you can watch them offline. Recommended. http://joomlaforbeginners.com/joomla-1.5-video-tutorials/index.php
Well known template provider RocketTheme also has a a good selection of Joomla tutorials on their site. Some are specific to their template, but many are good overviews of Joomla in general.