This truly unique book has become necessary because of the newest advancements in computer technology. It outlines the techniques involved in "cybersketching", or making observational astronomical sketches and detailed 'scientific' drawings using modern digital equipment, primarily PDAs and tablet PCs. Choosing hardware and software is discussed, followed by the techniques involved in producing finished drawings. Completing and enhancing these drawings at the desktop PC is also covered. No other book to date deals with the subject of digital observational drawing. People are increasingly 'digitizing' their lifestyles, and future amateur astronomers will not have to contend with juggling soggy paper and smudgy pencils at the eyepiece! Those who have seen the techniques pioneered by the author have universally commented the use of handheld PCs with touch sensitive screens is the future of recording visual observations of astronomical subjects.