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Get this book. Its got everything you need to know from what kind of qualifications you need or should get, how to apply, how to evaluate a good from bad job, and it even goes over different regions of the world and how its like teaching there. There is some contact information in the back of the book for ESL schools around the world but a lot of it is out of date. I studied under this man, he is the guru of ESL teaching, though you'll never hear him say that.