Please don't take this the wrong way, but you might want to try a
computing forum, rather than Excel. I'll do my best to help just the
same.
I'm working under the assumption that Excel is installed on your
machine. If so, just browse to the file on your disk and double click.
Excel will open the file automatically. If you've done that and it's
not working, it's highly probably that you don't have the software
installed on your home PC.
I'll try to help, but please try to provide a little more detail
regarding any errors etc. that you're getting. It's rather difficult
to troubleshoot in the dark.