Developing an online resource site for Extension master gardener (EMG) coordinators is an ongoing project for Extension collaborators. Begun in 2014, the website includes peer-reviewed resources focused on best practices in volunteer management and program administration. The website is organized according to nine resource categories (e.g., program planning, engaging and teaching adults) and three resource types (i.e., readings, PowerPoint files, templates). In this article, we identify criteria used by peer reviewers and describe the processes for identifying potential resources, building site content, and making the website more accessible.