Meniere's Disease Support Group
Meniere's disease is a balance disorder of the inner ear. The symptoms of Meniere's are variable; not all sufferers experience the same symptoms. However, "classic Meniere's" is considered to comprise the following four symptoms: Periodic episodes of rotary vertigo, hearing loss, tinnitus, and a sensation of fullness or pressure in one or both ears.

If possible and if you don't mind, could you let me know about your book you are using? I will more than likely go deaf in the next few years, I would like to begin to lean ASL or sign language.
God bless!
Rich
As for books you can buy a cheap used copy of A Basic Course in Sign language I used that in college and it was easy to learn from.
I have been watch Keith Wann on you tube he is a child of a deaf adult and a comedian so he makes learning it fun.
Have a blessed day!
Rich