I have been teaching Spanish for many years and, recently, I was also giving some English lessons. It was mostly for this reason that I felt I was lacking a specific course for teaching English and, after some research, I decided to take the one offered by MyTEFL. Luckily, I found discounts easily available online, making the price more acceptable. A small piece of advice: once you enroll and pay, the time starts counting, so be sure first you'll have time for the course.
It turned out that a lot of the content was familiar to me from my experience as a language teacher. However, it was still very positive to read all those reflections and guidance, written and arranged in chapters by somebody else. It showed me what I was already doing well and what I could improve in my lessons. What I mean is that the course is useful per se, even if you teach other languages. Of course, it also includes specific information about teaching English grammar.
I found the last part about online teaching especially useful (I got the 140-hour-course), because I didn't know about many of the platforms, and it's really convenient to have all this information together in one place. In my case, I'm not sure yet if I'll keep on teaching English this year. Mainly, I took the course because I was interested in it and I had a few freer weeks this last summer. If it so happens that I need it in the future, I already have it. I must say as well that this certificate is way more useful if you own a passport from an English-speaking country (which is not my case): if so, you have many job opportunities.
Another aspect that appealed to me was the fact that I can access the contents after having completed the course. For comparison, in the past, I took a few courses for teachers of Spanish, and it was a big downside that, shortly after they were over, the contents became invisible to me. I really appreciate getting this extra value here for a similar price.
I must say I was a bit surprised about the course being all text. I thought there would be some audio activities or some way of checking our level of English (well, there are a few audio files, to be honest). On second thought, I guess that if you don't know English well enough it won't cross your mind to take such a course in the first place.
All in all, I'm very happy with this course.