i am HoH and would like to start learning some ASL. my big problem is that my left hand and left arm do not function well and have a limited range of motion. my occupational therapists have told me that i've gotten to about the best i can, now. my keyboard typing on my laptop is done with only my right hand. i also have Parkinsons which can add to anything i might try to sign. i am most interested in finding out about one-handed signing.