Duplicating content

Hi,
Can anyone please help me with several questions regarding making duplications:
1. I would like to make several versions of landing pages. How to quickly duplicate a version into different pages (with different permalink obviously) so that I can slightly modify 'em without having to upload all the gallery images again?
2. On a different level, I am thinking to copy the whole website but in different language and in different domains (.com vs .nl, etc). Is this an ok thing to do? How to to duplicate the entire website (so that
I don't have to set everything from skracth, cause it was my websdesigner did it last time- only tochange the text)?
Many thanks in advance