This APS Resource Guide provides information based upon research conducted to formulate conceptual models for the six APSs and is intended to serve as a resource for PREP implementation. Each APS section in this guide may be considered stand-alone, although some topics and conceptual models have overlapping components. Each section includes the relevant conceptual model and definition, key topics, examples of implementation activities, tips for integration, curricula resources, and other online resources to provide PREP grantees with further guidance.