Holy Cow! Only 5% through The Cambridge Guide to Teaching English to Speakers of Other Languages by Carter & Nunan! I guess that means the material is thorough!
I have loved the training. My good friend, +David Gruber & his wife, Lindsey, recommended American TESOL Institute, and I have been very happy with the education so far. (The design remains to be improved a little bit, but you can't judge e learning by its cover, I guess.)