What Percent of the world speak and understand ASL (American Sign Language)?

Hello, We have a 19 month old son, and he has been learning American Sign Language since he was 6 months old. He is not deaf, but we feel that by learning sign language he could communicate with a population in the world that he would not be able to otherwise. Since he is young, […]

Should I learn sign language or to speak spanish?

I have decided to either learn to speak spanish fluently or learn American sign language. I can’t do both so I have to choose one. Does anyone know if one is more marketable than the other. My goal from learning one of these languages is to make myself more marketable career wise. .