The Lessons in SignWriting Textbook by SignWriting inventor Valerie Sutton is a 220-page 15-chapter tutorial published first in 1990, expanded to a full reference book in 2002, and updated in 2014. Colorful photos and illustrations are accompanied with short English explanations of symbols with sign language examples in American Sign Language (ASL). The 15 chapters teach how to write the body movements of any sign language in the world, step by step. Chapters are: 1. Introduction to SignWriting, 2. Viewpoints (choosing to write from the Expressive perspective), 3. Handshapes, 4. Contact Symbols, 5. Finger Movement, 6. Straight Arm Movement, 7. Curved Movement, 8. Axial Movement (Arm Rotation and Wrist Movement), 9. Circular Movement, 10. Facial Expressions, 11. Head Movement, 12. Movement of the Body and Torso, 13. Movement Dynamics and Timing, 14. Punctuation for Sign Sentences, 15. Writing Signs & Sign Literature. Available on Amazon.com as a printed book: ISBN: 978-0-914336-55-6