What do you get out of signing in to Office 2013? Well, you get to work whenever and wherever you want. By signing in to Office 2013, you can save your Office files online to get to them almost anywhere and share with anyone. You can also get to your themes and settings from anywhere. They travel with you—even across different devices.
If you have your own copy of Office, you’ll probably use your personal Microsoft account (an email address and password)—maybe from your Hotmail account. But if you don't have a personal account, that is OK, you can sign up for one by typing the email address you want to use and clicking Sign in. On the next sign in screen, click Sign up now.
If it’s your business or school's copy of Office, the account information is given to you by your business or school and is called an Organizational account.
Each account allows you to get to Microsoft online services, and these services can be different for each account. You can have both accounts. Just sign into the account that has the Office files you want to work on. You can always switch to the other account at any time.
To see if you are signed in, just look for your name at the top right corner of any Office programs or when you start an Office program. After you sign in, you can update your profile or switch accounts from here any time.