The first time you use one of the Microsoft products, it will ask you to log in. You will want to pick a Work or School account, NOT a Microsoft Personal account.
Students: You are on a server called "Student," so you must add that to your full email: Portal User Name@student.tacomacc.edu . Your password is your Portal password.
Staff & Faculty: You will use your full TCC email. The password is your Portal password.