Now, when my partner got me an S414 I did this and for me it worked wonders! I set-up an 'interesting' target & do your best to control the scene, in my case a vase filled with glass beads, pebbles & water then top light with a std 250w workers floodlight finally blacking out all the windows. I then took a photo in full auto mode, and used those settings as a 'known good' state. From those settings I simply took one parameter at a time and changed them to see the effect. When I'd done that I started to put items onto auto mode to see how the camera reacted to the settings I'd used.
Though this is no substitute to talkin' to people who have been working with cameras for years and reading books on digital photography you sure as hell get to know your camera well. which, at the end of the day, isn't such a bad thing is it