Translation of flattern in German-English

I try to learn English as much as possible so that I can travel next year to the United States. I would agree to your proposal but I also need to find good teachers. My goal is quality and speed.
I've been working on and off on the dictionary during the entire week, and I'll spend some more hours on it this coming weekend. Sometimes he would get a bit mixed up and use formal Castilian sometimes instead of informal.
I would also like to stay for some time abroad, I had no time yet. With all the kids it is difficult. Next year, however, we might go to Rimini for a month. We will rent a house there in the summer.