How do I participate in the ATD communities of practice? KB Admin, ATD Updated October 14, 2016 19:23 Follow Visit the community page, comment on the blog, connect with the community manager, connect on our many social media channels, and share your knowledge! Related articles How many ATD communities of practice are there? How much does it cost to join a community in addition to the ones that come with my membership? What is the Speakers Bureau?