How to Hold a Guitar Properly, (without destroying your body!) - YouTube
Classical Guitar Sitting Position (How to hold the classical guitar) - YouTube
Amazon.com: TENOR TPGS+ Professional Ergonomic Guitar Rest, Guitar Lifter, Guitar Foot Stool, Footstool Strap, Professional Posa Guitar Support for Classical, Flamenco, Acoustic or Arch Top Guitar Players.: Musical Instruments
How to Properly Hold a Classical Guitar - dummies
Amazon.com: Guitar Balance PLUS Support Classical Guitar Adjustable Rest (PLUS): Everything Else