visit www.office.com/setup then select Sign in.
Sign in with office home & student.
If you don't have microsoft account then create an account.
then enter your email id and password then next.
when you create your account then it provide activation key then choose confirm it.
From the Office home page select Install Office.
This completes the download of Office to your device.
Your install is finished when you see the phrase, "Office is installed now".
you where to find Office applications on your computer. Select Close.
To open an Office app, select the Start button lower-left corner of your screen.
To open an Office app, select the Start button and type the name of an Office app, like Word.
To open the Office app, select its icon in the search results.
When the Office app opens, accept the license agreement.
Office is activated and ready to use.