Learning to type without looking at the hands varies in difficulty depending on motivation, age, concentration and any health or learning disabilities. Known as touch typing, it takes around eight to ten hours for the average person to learn the basics.
Those who are very young or very old may have a more difficult time learning how to touch type due to lack of concentration or lack of refined motor skills. Certain disabilities such as dyslexia also heighten the difficulty of touch typing.
Like any skill, touch typing requires many hours of practice in order to reach the target speed of 40wpm. A person who has practiced for about eight to ten hours begins typing at a speed of around ten words per minute. Additional practice of about 30 to 40 hours can yield a result of 40wpm.