Bart wrote:
> 11. "with students in a Internet" - "in AN Internet..."

Hej, there is only one Internet - so The Internet.
http://en.wikipedia.org/wiki/Internet

>
> 13. "Systems Administrator" rozwala Ci ladne wyrownanie nazw stanowisk.
> Wyrownalbym wlasnie do "Systems Administrator". No i chyba jednak
> "System Administrator", ale ja sie nie znam.

yes, System Administrator - see
http://sage.org/field/jobs-descriptions.html