I (Dr. Robinson) began instruction with Kaleigh in the 3rd grade as she struggled to see large print at 2 inches. Here is a video of her first learning skills and as time passed, her typing with special hands was no problem as she quickly got up to 77 words per minute with her special hands.
Practice and Patience: Regular practice is crucial. Start with basic exercises in how to use each hand and gradually increase complexity. Focus on accuracy before speed. Using these techniques and applying this knowledge to her actual work, within 3 years she went from learning to typing at 77 wpm using JAWS screen reader. The above is true for learning braille also.