I have uploaded the materials for my Advanced Data Analysis course on Mediation and Moderation online. The instructional material can be found at this link. It is based on the excellent book of Andrew F. Hayes Introduction to Mediation, Moderation, and Conditional Process Analysis, an invaluable resource to learn these techniques, written with rare clarity. The material includes a brief introduction to R and RStudio, a short summary of exploratory data analysis and linear regression, and sections dedicated to mediation, moderation, and mediated moderation using the Hayes’ process software.