Here is a helpful site for those who want their photos to look a little better than the way they do when they come straight out of the camera.

Personally I have a lot of trouble in this regard. The problem is I could fiddle with curves, levels, saturation, filter layers and all the other options available to me in Photoshop all day.Then I find that when I look at them again the next day, or a bit later, I could do it all again and better. Those who know me might find this a familiar story especially in the music department :\

Anyway if you are looking for tips and tutorials on making your photos look a little more professional then there is some great information on Still Journal