Recently took their online TESOL Diploma course and it was a great experience. Not only did was the course easy to understand and extremely useful, but it is also designed to be completed as quickly or as slowly as you want. I managed to complete the course in 1 month by working on it steadily and now I am working abroad teaching English. Their instructors are really helpful and they even shipped the Diploma to me when I finished the course free of charge.
Would recommend them to anyone looking to do an online TESOL course that is affordable, easy to understand and overall enjoyable.