Installation of Microsoft Office 2013 or Office 365:
If you are installing Office for the first time, please follow the below instructions. Open the URL http://office.com/setup
Type in the product key and click on Setup It will ask you to login to your Microsoft account. So that the new installation is associated with your Microsoft Account. Hence it is not required to keep the product key for the future use. It will be added to your Microsoft Account. Follow the below steps to complete the installation Now you are good to use the new Office 2013 or Office 365.