Christos Christofidis successfully completed The Data Scientist's Toolbox course offered by Johns Hopkins University on Coursera with distinction on January 13, 2015. The course provided an overview of the conceptual and practical tools used by data analysts and scientists, including version control, markdown, git, GitHub, R, and RStudio. The course was instructed by Jeffrey Leek, Roger Peng, and Brian Caffo of Johns Hopkins Bloomberg School of Public Health.