Office 2019 is a one-time purchase and does not receive feature updates after purchase. Office 2019 includes a subset of features found in Office 365, but it isn’t part of Office 365. Office 2019 will receive quality and security patch updates as required. Office 365 is the user-based subscription service powered by the Microsoft cloud. It includes the most collaborative, secure, and up-to-date features.
First, check to see if you are eligible for Office 365 Education, which is free for qualified teachers and students, and includes Word, Excel, PowerPoint, Microsoft Teams, and other classroom tools from Microsoft. Office 365 Education is not a trial, and is available for free to accredited academic institutions who have successfully signed up for this program.
If your school is not eligible for Office 365 Education, you can choose among other options to find the Office version that fits your budget and needs.
A Microsoft account is an email address and password that you use with Outlook.com, Hotmail, Office, OneDrive, Skype, Xbox, and Windows. As part of purchasing Office, you’ll be prompted to sign in with yourMicrosoft account. After redeeming your purchase at setup.office.com, your Office product is added to your Microsoft account and you’ll use this account to install or reinstall Office.