What spot does American Sign Language rank on the list of most commonly used languages in the world?

I am aware that the top three most commonly used languages in the world are: 1. Mandarin 2. English 3. Spanish, but I have no idea of how many people use ASL. Thanks! .

How can I learn the sign language and gestures which are commonly used in every-day English?

I’m a student of English but since I’m learning it as an EFL student I’m not very fammiliar with the culture. Americans use a lot of signs in their conversations, I already know some of them but I’d like to know more. What can I do? .