Translation of kälter

My brother moved there last year. He met a woman and went after her. After six years they have broken up, but he no longer wanted to return, because he has settled down in his new home. I am visiting him once a year.
On the second day we drove around Los Angeles. We were totally jet lagged (and so were our kids) and we decided to take it easy on that day. We went to Rodeo Drive as well as Beverly Hills. Both our children slept during the entire afternoon.
That's a great deal. I know that in the beginning it is difficult to have conversations, especially if you're not stable with vocabulary. Actually, your English does not seem so bad. Have you ever taken a course?