Translation of Patenschaft

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 usually do not travel, and if I do, then only to England, when I visit my parents who live in a suburb of London. I can not afford to travel too much, because it is a very large expense.
Great that you've written me back so quickly. I want to be your pen pal and we could help each other. I am looking for people who could help me learn Spanish, with focus on conversations.