Just getting to grips with your camera? Not sure about the relationship between f/Stops and shutter speed? Want to know more about ISO speeds and camera shake?
Well why not try a camera simulator. We have had flight simulators for years, so a camera simulator was an idea waiting to happen. I have recently come across 2 rather good simulators that may be of interest.
Camera Simulator by Paul Cheney
The SimCam by Photonhead
For a full understanding of what these simulators are teaching you, I recommend a good read of Understanding Exposure by Bryan Peterson or even my exposure cheat sheet.
Shadows and Highlights
Preflight Check List
Exposure Cheat Sheet