For complete application visit : www.office.com/setup
If you have an Office for home product and bought Office at a retail store or online store, but don’t have a Microsoft account, it’s possible you haven’t redeemed your product key yet , or you missed the step for linking your recent purchase with an account.
You can activate office by visiting website
Then follow these steps:
Then follow the prompts like entering your product key etc.
Your account is successfully associated with Office when you see the page.
Then Install & Activate Office by selecting the PC or Mac step-by-step tabs.
How to Create Microsoft Office Account?
Go to the Microsoft account sign-up page and select No account? Create one!
Fill out the form with your information and create a password. Use the Use your email instead, Use a phone number instead, and Get a new email address links to change how you sign up.
for more details, visit: www.office.com/setup.