Translation of margarine in German

We returned to the former capital of the South at dawn and were dropped next to our place. We had a very nice day all in all, although it was very touristy. We felt that we have seen enough of the area.
I understand that you use the article 'die' when talking about a feminine object, das when the subject is neutral, and der when talking about a masculine object. But how can you remember all these?
The type of exercise was new to me and I think it worked great. How are things in your country and in your city? Do you also have Thanksgiving holidays? I enjoy my free time at home with my kids.