Head on over to the National Center for Learning Disabilities. They have a great video on how learning affects a child's emotions.
You Tube video about famous people with dyslexia.
You Tube Video about What it is like to be Dyslexic (age 8 or above)
Northwestern University researchers report they have found a biological mechanism that appears to play an important role in the reading process. http://www.sciencedaily.com/releases/2013/02/130219172159.htm