don't bovver getting the latest edition .....
(If you hadn't got the old one back ... that would be a different matter - but the dummy books are good for a few weeks ... and then tend to be too basic .... so no need to throw your money into it.
read the one you have .... as long as you stick with it.
the world hasn't changed that much ....
in the "how to" market there are lots of second editions .... mainly dealing with Vista
and probably not with external drives .... think of it as a second drive .... and files, folders and drive letters are the same
.