This course is designed to teach methods for assessment, diagnosis, intervention, and treatment of the person who misuses alcohol and/or drugs in social service, mental health, medical, rehabilitative, and specialized substance use treatment settings. It is directed to clinicians who work with (1) individuals with early stage challenges, (2) individuals with more serious challenges who do not acknowledge the condition or its severity, (3) individuals diagnosed with some form of substance use disorder (SUD), and (4) family members who seek assistance with loved-ones who have SUDs. The course provides guidelines for routine screening of clients, taking a detailed drinking/drug history, working through ambivalence about change, increasing motivation for change, examining family dynamics, and treatment planning and implementation. Attention is paid to harm reduction approaches, use of evidence-based treatments, and the role of 12-Step Programs in supporting recovery. Teaching methods include lecture, skill practice, video demonstrations, and case consultation.