The Tradëscan Codex

Hi Ricky, I was wondering if you could help me. I am dbesilad and have a Mac. I am looking for a voice to text software (free would be great, but, if not, that is okay) that would allow me to write stories by speaking into the computer. It would have to be able to do all the normal story functions like dialog, settings, paragraphs etc. I also was wondering if whatever you tell me would be good can be used to write screenplays with. I don't know a lot about computers (I didn't know what text edit was until someone told me), so, any help would be greatly appreciated. If I had to rate things, the verbal screenwriting would be much more important. I am trying to talk the band nickelback into backing a TV series based on one of their songs. I have 7 herniated discs, crushed spinal cord, and 3 cysts in my spinal canal. Needless to say, I am in a lot of pain and take a lot of pain medication, which barely touches the pain.thank you in advance for any help u can offer or direction you can point me in.Dan