When you create a document in Word and name and save it, you create a file on your disk that holds your document. When you download a picture from the Web, you give it a name and save it as a file on a disk. Of course, any disk these days contains many files. If they were all visible when you looked at a disk, you would have a hard time finding anything. You organize files by putting them into folders.
Folders can contain other folders as well as files.
If there are several disks or divisions of a disk you may find other drive letters as well. My Computer a standard icon on the desktop. My Computer is quick, but doesn t give you as convenient an interface for file and folder management as the second choice, Windows Explorer. Icons labeled for the available drives appear. Double-click the icon for the disk you want to navigate.