For Contributing and a master list go to this link: https://github.com/o3de/community/blob/main/CONTRIBUTING.md For those that are looking to join specific SIG lists, you can find them here: Build SIG: https://lists.o3de.org/g/sig-build Content SIG: https://lists.o3de.org/g/sig-content Core SIG: https://lists.o3de.org/g/sig-core Docs SIG: https://lists.o3de.org/g/sig-docs-community Graphics-Audio SIG: https://lists.o3de.org/g/sig-graphics-audio Networking SIG: https://lists.o3de.org/g/sig-network Platform SIG: https://lists.o3de.org/g/sig-platform Release SIG: https://lists.o3de.org/g/sig-release Security SIG: https://lists.o3de.org/g/sig-security Testing SIG: https://lists.o3de.org/g/sig-testing UI/UX SIG: https://lists.o3de.org/g/sig-ui-ux