I have been teaching English at a cram school in Asia for a year and am now going to Latin America to work in a poor village. The materials I now use are good but copyrighted by the school, so I can't take them. I am also used to having a library of resources. Now, I won't have a photocopier and probably won't be able to bring in a lot of resources, (definitely not one per student) so I am looking for good books and materials out of which I can get plenty of mileage.