My husband likes Association football and I'm trying to learn more about it.
It is another term for soccer, and it is extremely popular across the world
Does the US have a good soccer team?
Well soccer is becoming increasingly popular in the States.  It is actually the 3rd most played sport in America
Interesting. There are women's professional soccer teams too, aren't there?
Yes, in fact, after the 2015 Women's World Cup, the US team was ranked number 1
Is soccer played in the Olympics?
Yes, it is.  But I would consider the Men and Womens World Cups to be the most popular event.  
What time of year are the World Cups held?
They are held in the summer.  There is a qualification phase that takes place before the World Cup FInals
Association football