I would like to suggest touch typing tool TypingStudy for everyone who think he wants to improve his or her efficiency. Strongly suggested - http://www.typingstudy.com
I agree. I have a bit faster typing speed right now with dvorak. not sure if it is really super-better, but I definitely benefited from http://www.typingstudy.com
I agree. The best we can do is to control that they are doing it right, for example, the typing technics are correct. That you can learn, for example, from http://www.typingstudy.com