Google Picasa, which I have been using for the last 4 months, is a lightweight photo editing software that has a lot to offer. The editing engine itself is a genius! Once you decide to edit your photos, you simply switch on to edit mode then you can start cropping, resizing, remove red eyes, zoom, pan, tilt and adjust the colors as well as image temperatures. You can also add different types of image effects which can turn your normal photo in a real work of art. So not become the real De Vinci type, but as long as you are creative, you can be an artist in no time.