If you're new to OneDrive sharing is easier than ever. If you're new to Office Online sharing is an easy process too. Learn how here.
You can open and edit your documents in your web browser with Office Online. If you have Microsoft Office installed on your computer, you can also open and edit them with the desktop Office programs. While editing your documents with Office Online is convenient, it does have fewer features and editing tools than the desktop Office programs.
To close the document and return to OneDrive, click the OneDrive link at the top of the page.
You will need to have a version of Office installed on your computer to use this option.
When you're ready to return to OneDrive, simply save the document within the desktop program and close it. The changes you made will be saved to the file on OneDrive as well.