Gesture Handler Example App – official gesture handler "showcase" app.
Talks and workshops
Declarative future of gestures and animations in React Native by Krzysztof Magiera - talk that explains motivation behind creating gesture handler library. It also presents react-native-reanimated and how and when it can be used with gesture handler.
React Native workshop with Expo team @ReactEurope 2018 by Brent Vetne – great workshop explaining gesture handler in details and presenting a few exercises that will help get you started.
Living in an async world of React Native by Krzysztof Magiera – talk which highlights some issue with the React Native's touch system Gesture Handler aims to address. Also the motivation for building this library is explained.