Microsoft offers its users to access essential Office apps like MS Word, Excel, PowerPoint, Calendar, Outlook, Forms, and many more tools for free through Office Online. To use Office Online, you should have a Microsoft account that you will use to sign in to office.com. That’s it! You can visit the www.office.com/setup link and sign in using your Microsoft account to access all the free Office applications online. You can upload your documents there and work on them or create new documents. Office Online also allows you to work in collaboration. So you can share your document with your colleagues and work on it at the same time.