Discover how to contribute to OpenJDK, the open-source project behind Java, its libraries, and the HotSpot JVM in this 38-minute video. Learn about OpenJDK groups, projects, and community roles. Explore the process of suggesting ideas, finding issues to work on, and contributing source code. Gain insights into downloading and building the OpenJDK source code, IDE support, and the Google test framework for native unit tests. Understand the importance of the Oracle Contributor Agreement and how to join the OpenJDK community. Follow along as Jesper Wilhelmsson, a Software Engineer at Oracle, guides you through the OpenJDK Developers' Guide, explaining terminology and processes essential for aligning developers in this collaborative open-source environment.