I have completed the course, did it out of need for something to do.
There is a huge glut of people who have this qualification, some excellent teachers who know a lot about teaching and ITand others who can't teach and can barely turn a PC on.
I do know from friends who have tried to pursue it as a career that recruiters require a whole host of other qualifications, ecdl trainer/examiner, mous master, and various other stuff.
So I think you should think carefully about why you want to do this course, what you want to achieve from it and are your expectations realistic.
As for places to study, terenure college comes highly recommended for all their courses.
I dont mean to scare you off, its just that I have seen so many people do this course thinking that they will be earning lots of money the second they pass the exam.
Best of luck!
Fintan