To send a copy of a document as an e-mail attachment, Sending a Document Directly from Word
On the Microsoft Office Button menu, point to Send, and then click E-mail.
In the To box, type the e-mail address of the recipient(s), and then click the Send button.
To turn change tracking on or off, ???
On the Review tab, in the Tracking group, click the Track Changes button.
To display revisions in balloons, Tracking and Managing Document Changes
In the Tracking group, click the Balloons button, and then ...