My sister is a ‘signer,’ the term called for them who knows sign language. She learned it with my cousin to be able to communicate with the deaf/mute individuals and help them as well. I remember they had this deaf friend who doesn’t know how to read and write, they were basically teaching her the basic like ABC’s and counting number. On a second note, do you know someone who is hearing impaired? HearingAidsElite.com for hearing aids has everything you need when it comes to hearing device. My sister said that when a deaf person uses a hearing aid, he/she can actually speak because apparently, deaf ones may not necessarily be mute ones as well, they just stop talking because they don’t hear anything.