Translation of carefree in German

My mom and dad used to speak English when they wanted to say something I shouldn't understand. In this way I have learned English. I did not tell them till late, but I did understand every word they said.
I had a few problems with my Mac. I guess I will have to buy a new one in the near future. I have already found the right product, and I will soon order it from the local hardware dealer.
I have already written some vocabulary lists on paper and typed in some of them here at Vocabulix. The automatic system here works better than flashcards on paper. Too bad there is no software.