Patient navigation is increasingly common in cancer care. While navigation programs often involve informal family caregivers, few navigation interventions specifically target the family caregiver. We developed the eSNAP and Caregiver Navigator Intervention to help cancer family caregivers identify and capitalize on informal and formal social support resources. While the skill set for patient navigators may be adequate for supporting caregivers, other skills and areas of knowledge expertise are needed. In addition, sparse documentation of navigator training best practices creates further challenges for dissemination and implementation. Our goal is to describe the education and training of cancer caregiver navigators within key competencies used to prepare and support navigators to deliver our manualized intervention. Nationally recognized navigation competencies, related to developing a sensitivity to ethical, cultural, and professional issues, knowledge development, skills development, and practice-based learning, were identified and adapted. Performance goals were identified within each competency. Training activities were selected to support competency development. Based on adult learning theories, we emphasize multiple learning strategies, including experiential learning and critical reflection. Two caregiver navigators engaged in initial training between December, 2019 and February, 2020. Initial training was supervised by study leadership, who coordinated with experts and stakeholders. Navigators completed initial training. We describe lessons learned. To ensure that navigators are well-equipped to provide effective services, evidence-based training programs that include navigation and protocol-specific competencies are needed. Given the lack of detailed training programs in the literature, we created a flexible, multimodal learning approach that other teams may adopt.