Please be so, so careful about doing this. My best friend spent about 6k going to school (money she didn't really have) this school was the best. She did her research. They had a message board full of graduates and current students talking about the school and job opportunities. They helped with job placement.
She did get a job. Despite what she thought - the reality was after three months of working she wasn't making minimum wage. Note even close. She realized to be as fast as she would need to be to make good money - she would need additional programs that fill in with short hand the full word (another several hundred dollars) and at least a year of working. She has a very fast natural type speed, but many of the doctors she would get transcription tapes for had very heavy accents - which would slow her down. The job she had started having less and less transcription work, she left and tried to find someplace else - never found another job.
Many of the work from home transcription jobs are slim pickings for new people into the field. They want additional certifications, they want you in office, or for you to do coding and billing.
My friend did work fairly flexible hours, but she said the transcripts were loaded at certain times.. so she tried to work early morning to get the most transcripts. More transcripts = more pay.
I want you to be successful, I just wanted to warn you - this friend of mine has been one of my best friends since High School. With her transcription degree and all that money invested, she still ended up working mornings at a hotel doing breakfast service and not using that training at all.