Join Stephanie Halligan Cobb a Deer Park ISD Auditory Impairment Teacher for a 6-week beginners sign language (ASL) course. ASL is a visual gestural language. That means it is a language that is expressed through the hands and face and is perceived through the eyes. A "visual gestural" language carries just as much information as any spoken language and it take times and effort to become a "skilled signer." But you have to start somewhere if you are going to get anywhere -- so dive in and enjoy.