Richard and his trips

This is a very interesting listening containing a lot of information.

Try to answer these questions:

What does Richard like about Cairo?
Where did he start to learn Spanish?
What's the difference between Argentina and Ecuador?
Where did he pick up some Quechua?
What did he do in Nicaragua?
Chabolas were built out of....
What was he teaching there?
"That's like selling coal to people from Newcastle" What's the meaning of this phrase?