This site is sponsored by Georgia Tech and includes an ASL Dictionary and ASL Stories.

The Center for Accessible Technology in Sign (CATS) is a joint project between the Atlanta Area School for the Deaf and the Georgia Institute of Technology. CATS is dedicated to providing accessibility to learning via sign language. CATS' goal is to enhance language, literacy and general world knowledge for deaf learners, particularly children. CATS has been awarded the American Library Association Grolier Foundation Award, 2004 for its contributions to children's literacy.

Great website for building sign vocabulary.  You can subscribe to their email list and receive a new sign each week.

This link give practice in fingerspelling various words.

This site has ASL Dictionary of concepts as well as ASL lessons.

Scroll down for ASL Dictionary.