Open Word on the Web and log into your Microsoft account.

Open a new or existing document.

In the Insert menu click on the Add-ins button and go to the Store tab.

Look for Wordtune in the search bar and click the Add button.

You can now launch the Add-in using the Wordtune button in your Home menu.

Note: If you are using the Simplified Ribbon layout, you will have to click the ellipsis (...) in your Home menu to access the Wordtune button.