Granny aupair

Hi, I'm 66 years old and I want to improve my english. I' m looking for a family in the US, where I could stay for some month.
I love children ( having 4 grandchilds), all animals, cooking, gardening and walking big distances in the nature.
The only thing I'm afraid of is driving a car in a foreign surrounding.
I would be very glad to get some answers.
Thanks Karin