Originally posted by Our Lady's slave of love:
[b]OR you can highlight it then press the Apple key and C and then put your cursor where you want to insert it and press Apple key and V and as by magic it should appear in it's new place

[/b]
Ah right the keyboard commands, just to add a few that make life simpler:
Apple key + s =save
Apple key + p = print
Apple key + q (or esc) = to force quite an application
When working in appleworks or other word processors:
Apple key + u = underline text
Apple key + b = bold text
Apple key + i = italicized text
Apple key + t = normal text
And as always go to your system preferences and play around with the different settings to change interface, and make things easier for you to use.