Special Education Nation is a great place to find definitions, causes, prevention, characteristics, implementation of instructional strategies, effects on adolescents and adults, and trends on the thirteen recognized disabilities. 

“I refuse to allow a disability to determine how I live my life. I don’t mean
to be reckless, but setting a goal that seems a bit daunting actually is very
helpful toward recovery.” ~ Christopher Reeve

“I have noticed even people who claim everything is predestined, and that we
can do nothing to change it, look before they cross the road.” 
~Stephen Hawking