The Community for Advancing Discovery Research in Education (CADRE) offers advice on becoming a successful researcher in the field of STEM education and a portrait of an early career researcher support program. The advice offered throughout the guide comes from experienced researchers who are part of the National Science Foundation's Discovery Research PreK-12 (NSF DRK-12) community. Over the past eight years, they have graciously shared their experiences with small groups of doctoral students and other early career researchers through the CADRE Fellows program. Those experiences and insights have been compiled to provide guidance on navigating the STEM education field as an early career professional. The guide is divided into two parts. Part I offers tips and resources to address the needs of STEM education researchers who are early in their careers, primarily doctoral students and research associates. These materials are organized around four focal themes: (1) pursuing academic and non-academic career pathways; (2) writing for publication; (3) building professional networks; and (4) developing NSF proposals. Early career researchers may choose to independently access the resources on an as-needed basis or pick from the resources and other elements of the Fellows program (described in Part II) to share with, for example, a study group with other graduate students and professional peers. Building on Part I, Part II describes a model for supporting early career STEM education researchers based on the CADRE Fellows program, and provides strategies and resources to guide those who supervise, advise, or mentor groups of early career STEM education professionals. Part II offers a detailed description of the structure and objectives of the CADRE Fellows program and the design of the activities within the focal themes. It also provides insights into the impact of the program. The guide is organized in such a way that advisors, supervisors, mentors, and program leads who work with early career researchers can choose those elements from Parts I and II that are most appropriate and use them to develop customized supports on an ad hoc basis or to form a more formal early career researcher program. Early career researchers might also choose to use several of the guiding questions associated with each strand in Part II when talking with more experienced researchers, or work on one of the assignments independently or with another colleague. [For the previous guide, see ED590550.]