Cut-and-paste in Word documents, along with Office documents, is pretty
simple and straight forward. Using the cursor left click and "select"
(i.e., highlight) the text to be copied or cut. Right click and decide
whether you want to copy the selected text or cut it from the document. Go
to the spot where you want ti paste the text. Right click and select Paste.
Bingo. Of course, if there are styles in the two documents, you may have
to use Paste Special (Edit, Paste Special) instead of just plain Paste so
that the pasted text matches the formatting at the insertion point. If you
are pasting from documents that are not in Microsoft Office, e.g., from the
web, you probably have to use Paste Special or you will have a formatting
nightmare. You probably also want to inform your users about using the
Clipboard, where they can store a bunch of text selections they previously
copied or cut and have them all ready for pasting. Without Clipboard, I
think you are pretty much limited to pasting the last bit of text you copied
or cut.
Some reading:
http://office.microsoft.com/en-us/assistance/HA010349211033.aspx