If you're looking for another way to train your speed, check out http://play.typeracer.com . It gives you and some other users a paragraph from a book, and you compete to see who can type it the fastest. Even if you're not competitive, it's comforting to see that even if you don't type as fast (yet, anyway) on the Twiddler as you do on a standard keyboard, you're about average in terms of absolute speed, or you're on your way to average.