The ability to save any of your selections and then use them at any given time is another useful Adobe Photoshop option. Let me show you how to use it.
If you don't want others to use your photos and images without your permission, you can create a so called custom watermark with your name or any other text you want.
In Photoshop CS6, the new version of Photoshop, you can use special cropping tool and you are done, but that doesn't mean you cannot achieve the same result with older versions.
Another new and interesting feature of the updated Photoshop CC that enables you to save layers directly into image files without clicking the Save button.