There are many options available if you want to save and send your document via email, to the web, to a SharePoint site and more.
Choose Send Using Email to display the options shown above. Select how you would like to send the item and the format you would like to use from the options shown at the right. If sending via email, your default email editor (e.g. MS Outlook) and a copy of the document format is attached to the message. Compose and send as usual.
If desired, you can save the document to the web and share it with other users using the Windows Live SkyDrive service, You will need and active account for Windows Live, Hotmail, Messenger, or XBOX Live. (It's a pretty cool solution if you need to share documents, photos, etc. with people outside of your organization.) For more information on SkyDrive use the link they provide at the right - after you click on Save to Web.
If you organization has a SharePoint server available to you,you can save your document to your SharePoint server directly using this option.
Use this option to save your document in a different format. This option is the same as using Save As then selecting a different file format however the descriptions of the formats is a little clearer using this method.
Use this option to save your document in PDF or XPS format. Also refer to the Save as PDF article. Either methods work fine.