Calvin Hollywood, a military instructor turned online community expert, shares insights on building robust online communities. He emphasizes the power of deep connections, likening them to military bonds. The discussion covers strategies for engaging members, such as using personal stories and GIFs to spark meaningful conversations. He introduces Dunbar's number to explain limits in relationship maintenance and highlights the importance of humility in community management to foster genuine relationships. Calvin also touches on balancing growth and quality in thriving communities.