I think almost anyone can benefit from the software, unless they are a really fast typist. Beyond that, anyone who has physical handicaps could benefit dramatically from this software. If you can speak, and master a few voice commands, you can use this software and type. It can be used for issuing commands in other software, but I have not done that because I can do that more quickly using my hands.
If you want to, you can buy it here: Dragon NaturallySpeaking Home, Version 11.