Appolgies about the Delay

Depends on what you want to copy
Text: Just rightclick on the Page and then Click "select all " then Copy
Then paste it into your email Will be distorted!
Note some Email services do handle it better than others
The better way is to save it to "favourites"
then copy the That address to email and send That
Works with webpages. but text files Have to use the other Way I Mentioned
Email can be Forwarded (shown to somebody else) Just open the Mail box find the "Forward" button And You can send it elsewhere as a Normal email
As regards webcams I agree with the answer you were given It copies very poorly
In the Old Days they Use something called a
"Screen Grab"...These may be found on Windows Media Player Realplayer under other titles, Need Better advice but its in that general direction

But
this search has lots of Versions of Screengrabs and How to use them Mostly Free add-ons
Add 1 word to the search and it will pinpoint a good program for you

example link
http://image-grab.qarchive.org/