While I have not worked in the transcription industry professionally before, I have been training myself for typing speed and accuracy, as well as transcribing audio and subtitling video.
In my previous employment, I have 5+ years experience in Web Development, which has given me a reasonably good typing speed. I have been writing short stories and non-fiction articles for years, and so have an eye for grammar and spelling.
I have recently been transcribing one of my favourite podcasts on the subject of writing genre fiction. You can see my work here: http://www.second-look.info/Transcripts/Writing%20Excuses/S03E14.html
I am hoping to move careers to have a more writing-focussed vocation, steering slowly towards a career in writing. So if you wish to test me in this regard, I am willing to do a little work for free so you can better determine my skills in this regard.
Thank you for your attention.