If you are considering a career in medical transcription, try joining a forum that will allow you to ask other members how their jobs are going, how they like them, and what the work load is. A friend of mine sign up for an expensive course in medical transcription without joining medical transcription forums, and found that the information the school provided to her was different from the reality of getting work as a medical transcriber on a free lance basis.
Medical transcription forums can be a great support network because they are populated by people in the business, or wanting to be in the business. Before signing up for expensive online courses, check with medical transcription forums to see if the market is really as deep as they claim it is, especially if you want to do it in your home with independent clients. There are so many educational opportunities that claim that you can make a great living doing this, that or the other thing, but what they do not talk to you about is what skills and effort you will need to make them happen, after you are certified.