Have you checked out the article in the "image posting, technique, shopping, wb tips etc. " sticky? They tend to be geared toward SLR cameras, but many, if not all, of the techniques can be applied with P&S cameras. A lot depends on the amount of control your camera allows you. Some have very few manual settings and only allow jpg capture, which limits you somewhat. Other models allow you to control all the same things a DSLR does in addition to saving the "raw" image. For these cameras, other than being able to change lenses, you can have almost as much flexibility as a DSLR.
As you come up with more questions, be sure to let us know what model camera you have, since there is a world of differences between the plethora of fixed lens digital cameras out there.
