On the home screen you will see a Directions Tab and a Tips Tab. Tap on Tips tab for tips on how to take pictures using your iPhone.
Tap on an image you like, as an example…
Your original image will automatically be saved to your camera roll. You will also have the option to edit your images by turning them black/white or sepia. You can also retake the picture or share your picture. Sharing is easy, by pressing a button you can text, e-mail, tweet, FaceBook or Instagram your image.
The additional save image button is for any image you edited and want to save. Only the original image automatically saved to your camera roll.