This book is a review of our clinical experience with optical stylets, with the Shikani Optical stylet and the Shikani technique for intubation (Styletubation). In this monograph (volume 1), we collected several published articles covering several topic as follows. Chapter 1─Chapter 5: The history and development of styletubation Chapter 6─Chapter 8: The technical pearls and tips of styletubation Chapter 9─Chapter 14: The role of styletubation in various difficult airway scenarios Chapter 15─Chapter 20: The role of styletubation during COVID-19 pandemic