To copy and paste use Ctrl+c and then Ctrl+v on the keypad, however if you are looking to copy text from an e-mail, *without* having to go through the annoyance of having to forward the e-mail in the first place, just hold shift, select the text, then you can copy the text and paste it where ever you like
Copy text from a mail message 1. Tap the message at the point from where you want to start copying. 2. Press and hold the shift key, and use the arrow keys to select text. 3. Press ctrl + C to copy the text, and ctrl + V to paste it to another location.