You can access the documents and allow other users to leave comments for that document in projects that work collaboratively with many people.
Each document is stored on Live SkyDrive, you see a URL to share documents for everyone.
Create and edit a new document directly on Web Apps
Edit permissions to see who can access the documents and so that they can only read or edit the document.
One thing to note is that you will need to use Office 2007 formats (.xlsx .pptx .docx) or higher. If you want to edit a document in an older format, the website will convert its format.
Microsoft Word
View an MS Word document on Google Chrome
Excel
After opening the file, you can click on the edit button to change the document. You can see the use function of the corresponding box on the Home tab.
Of course the functions used are limited
Create a new Workbooks
A new Worksheet
Edit Excel documents on Firefox browser
. On Google Chrome
PowerPoint
PowerPoint features on the web are also limited
It has 3 Home tabs, Insert and View with a few basic editing features
You can go to the Slide Show view of a slide show inside a browser window.
Edit PowerPoint on Firefox
Create a new Slide on Google Chrome.
If you want to try Office Live Apps you will need a Windows Live account and some MS Office documents.