Picasa is a picture viewer that has some simple editing tools built in to do tasks such as removing red eye and cropping photos. It is great for computer novices to use to manage all of the photos they take with their digital camera. Picasa is no Photoshop killer, but I put this software on my father's computer and he was able to use it without any problems. Give it a try and I don't think you will be disappointed.
Picasa can syncronize your photos to Picasa Web Albums, it can create slideshow movies and upload them to Youtube, and add text and watermarks in your pictures.