This is the third year that Sandra Sanchez-Roige presents at the Jackson Lab Short Course on the Genetics of Addiction, which was held online (February 21-March 4). Her talk, “GWAS Fundamentals”, was part of the session on “How do we study human genetics of addiction and what are the challenges and unanswered questions?”, along with Drs. Danielle Dick, Howard Edenberg and Elissa Chesler (course director). Almost 300 students registered for the course. Michael Ehinmowo, a student from the course, is now volunteering in the lab. Welcome, Michael!