Translation of halbieren

Thanks a lot. Today and tomorrow are holidays in Switzerland, but I'll do it Tuesday first thing in the morning...please have a look at it and confirm. Where do you want me to place a reference?
I even put on my Poncho, a plastic rain coat, in order to protect myself from the aircon-breeze. Somehow I managed to fall asleep and woke up at around six in the morning when we approach Palenque.
Is there a way that I could test your Spanish and German lessons? Quality is very important to me. Can you send me a lesson electronically (by email or word)? Maybe you have your lesson ready.