How can we do copy-and-paste in S60 phones?

Hold the () Button and move the cursor over the text you wish to mark. You should see the "copy" appear on the screen, press the select[ok] button
Now the text is on your Phone s clipboard. You can paste it in any place where text is accepted.
For eg., you can paste it in Notes, Calendar, SMS Messages, Address Book Entry and almost every where in the phone.
To paste the content keep the Edit button depressed, and you can see the "paste" appear on screen to the right side. Press the adjacent button.