I read a couple tutorials about the basics, and they were very helpful. Also, it's helpful to use the guide EA gives for the tools you're completely unsure of.
Here are the tutorials that I have bookmarked. I found
this one extremely helpful. And
here is link to MTS. They made a list of tutorials. I haven't looked at all of them, but some are good.
Also, don't expect to get anything decent right away. CAW is
very complicated. It's best to just fool around with the tools instead of just trying to dive in and expect a town to miraculously form the first time. I can't tell you how long I spent just trying to make realistic looking mountains before I ever tried to put them in a world.
I'll readily admit the camera is a pain in the neck, though. If you find a way to make it better, you let me know, okay?