Sorry if this is a stupid question--but I'm 95% helpless when it comes to computer tech stuff. I need to get a new Macbook Air and have Microsoft Word loaded onto it. Do I have to buy yet another copy of Microsoft Office Home & Student? Or can I move MS Word onto my Google Drive and then move it back to my new Macbook Air? I don't want to do anything shady. I just hope to save some money for once. Thanks.