How to install / uninstall Office?

To install the latest version of Office

Uninstall your Microsoft Office (e.g. Office 2013, etc.) if it is installed.
Sign in to https://portal.office.com with your email address
At the top right of the page, click Install Office
Download the Office 365 apps and install to your workstation

In case you have problem installing Office, please refer to: Install Office on your PC or Mac with Office 365 for business.

For Mac users, please read What to try if you can't install or activate Office for Mac.

In case you need to do a clean un-install of your previous installation and install Office 365 again, please refer to http://support.microsoft.com/kb/2739501.