The purpose of this handbook is to orient Resilience Food Security Activities (RFSA) partners with step-by-step instructions for social and behavior change best practices, providing practical tools for each milestone during the refinement period. Seven milestones are used to organize the best practice instructions and tools in (loosely defined) time periods in the refinement period. RFSAs work to strengthen the adaptive, absorptive, and transformative capacities of communities vulnerable to malnutrition and food insecurity through multi-sectoral, integrated activities.