Microsoft Office setup has a wide range of products with different features.These versions include office setup 2016, office setup 365, office setup Home and Student. All these products you will need a Microsoft office.com/setup account to access the full features of office setup. office.com/setup If you use services like Outlook, OneDrive, & Skype then you should definitely have a Microsoft account. Office 365 also comes with business email and online inventory systems. You can choose that too if you are working for a business.
Sign-in to you Microsoft account and then Enter 25 digit alphanumeric office setup product key on country and language. click on next to start office installation, For more visit on :
In reply to danielcrey:
I suggest you that don't look for free versions because your data won't be safe there. Go for Office 365 plans they are very reasonable and you can opt from a range of different plans.
In reply to TerranceM:
I have about 350 Users which i want to migrate to office 365. Which exchange online plan will be best for me.