I'm living in Poland, and have some limited access to resources, so if there's anything I could do to help, let me know. You'll find good refernces from these publishers:
Kagero - Polish/English military history and monographs
AJ Press - Polish, Polish/English, English military history and monographs
Other resources:
http://www.jadar.com.pl/start-a.htm
http://www.part.pl/
http://www.swiat-modeli.com/index.php
http://derela.republika.pl/linki.htm
The correct way to say "I'm Polish" would be "Ja jestem polakiem."
Bawcie sie dobrze!!