TESOL/ TEFL

There's nice navigation throughout the course. Moreover, the modules are wisely divided into small lessons, which is pretty comfortable for the student as you can stop anytime you need to and continue later.
The logics of the course is understandable as it goes from the basic topics to the more complicated ones, so you can't miss any important abbreviations or notions.
The course keeps up-to-date and it also contains some information on online studying.
I would highly recommend it not only to the beginners in teaching, but also to more experienced ones as I'm convinced eveyone can find something useful for himself in it.