Sexual and gender minority (SGM) students may face unique opportunities and challenges in their journey to become psychologists. The increasing visibility of LGBTQ+ identities highlights the need for SGM identity-specific professional mentorship in the field of psychology. Yet, for some, this can be challenging to find. This chapter is intended to serve as a guide for SGM students navigating graduate school and early career milestones. We review a variety of common professional development issues for SGM psychology trainees: openness and privacy about your SGM identity in professional settings, considering priorities when identifying a primary mentor and school, connecting with additional mentors, identifying and fostering an inclusive environment on campus and in the community, self-care, navigating interpersonal relationships, advocacy, and providing mentorship to junior colleagues. We also include specific resources for SGM students and professionals. In addition to serving as a guide specifically for SGM students, we hope this chapter can benefit allies including mentors and colleagues with education about common SGM experiences.