Training a deaf dog or a dog with so called “limitations”

I was 10 years old when I decided I wanted to train Pepsi. She was a collie mix of some sort, and probably about 10 years old. Sweet and docile with a willingness to please, she also had a couple of limitations. She was in fact, blind and deaf. She was not born that way, but age had taken it’s toll on her. If I had started when I was older I might have been daunted by the thought of trying to train a 10 year old blind and deaf dog. But being 10 years old, I didn’t understand anything about that. I just knew that I loved to train dogs.