Free sign language lessons are available online at LifePrint.com and Start-American-Sign-Language.com. Both sites have video lessons as well as written and illustrated instructions for various signs.
Both Life Print and Start American Sign Language teach American Sign Language only. American Sign Language is used in the United States and much of English-speaking Canada. However, many other countries have developed their own forms of sign language that are not generally mutually intelligible. In American Sign Language, hand signs that correspond with words are letters are used in conjunction with facial expressions and body language to form a complete and complex method of communication without words.