Sign in here with your myUMBC credentials. Once signed in, it will take you to a new page. On that page, click Install Office towards the top right-hand corner of the screen and then click Office 365 apps to download Office 365.
Once downloaded, click the installer to begin the installation and follow the onscreen instructions to complete the installation.
When you open Office 365 for the first time (Microsoft Word for example), you'll be prompted to sign in. To sign in, type in your UMBC email address, click Next, and then log in to myUMBC. This licenses Office 365 on your Windows device and completes the installation.