When you are surfing the Internet and you find a picture that you would like to copy, right-click the picture and select Save Image As from the shortcut menu. The My Pictures folder in My Documents opens by default when you save a picture. Give the picture file a name and click the Save button. You can now find the picture in the My Pictures folder. Be careful of copyright infringement when you are using pictures from the Internet, some are free to copy and others are not.
You can also save an image as desktop wallpaper. Right-click the picture and select Save As Desktop Background from the shortcut menu. The picture will replace your current wallpaper on the desktop.