The TODO group of the Linux Foundation brings together leaders of open source programs from across industries to share knowledge and best practices about running an open source program.
The OpenChain Project publishes an ISO standard for open source compliance programs, as well as training and educational resources for open source programs.
GitHub's Open Source Guides provide great information about best practices for creating and maintaining successful open source projects.
Open Source Compliance in the Enterprise provides a deep dive into open source compliance practice focused on companies that distribute software containing open source components.