A Basic Course in American Sign Language
The basic four parameters of every sign are handshape, palm orientation, location, and movement.
2 Books to purchase:
1) A Basic Course in American Sign Language
by Tom Humpries, Carol Padden, & Terrence J. O’Rourke
2) Signs for me: Basic Sign Vocabulary for Children, Parents, and Teachers
by Ben Baham & Joe Dannis