This book provides a comprehensive study of the many ways to interact with computers and computerized devices. An "interaction technique" starts when the user performs an action that causes an electronic device to respond, and includes the direct feedback from the device to the user. Examples include physical buttons and switches, on-screen menus and scrollbars operated by a mouse, touchscreen widgets, gestures such as flick-to-scroll, text entry on computers and touchscreens, input for virtual reality systems, interactions with conversational agents such as Apple Siri, Google Assistant, Amazon Alexa, and Microsoft Cortana, and adaptations of all of these for people with disabilities. Pick, Click, Flick! is written for anyone interested in interaction techniques, including computer scientists and designers working on human-computer interaction, as well as implementers and consumers who want to understand and get the most out of their digital devices.