I believe that if you have downloaded Office 2013 and use it, you will find that the Office 2013 menu Bar has an option to share "Share", you can share the document (Share) to SkyDrive, mail, direct e-mail, online or blog, Here you need to introduce Microsoft's "Web Apps" application;
Office 2010
Office 2013
Microsoft Office Web Apps: Microsoft's online application that allows you to create Word documents, Excel spreadsheets, and save them on SkyDrive, an online service storage system, you can access the Internet, They can be accessed anytime, anywhere, and they're free.
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You do not need to install any application to use the Web Apps, just a program called Microsoft SkyDrive, you can use them well; SkyDrive client is also free, it is a storage service, you can save documents created on the web, is actually stored in the cloud, only a device can connect to the Internet to access the document;
Once you have created a good document on the SkyDrive, you can edit them directly on it, or upload files from your computer to the cloud, in addition to documents, pictures, music, or work with Microsoft Lync, which is very handy.
Using the Web apps and SkyDrive services, you need a Microsoft account (in fact, MSN, Hotmail account)