I gave today a relaxed “hands-on” course to R, to introduce some colleagues to the syntax of this reference software for statistical analyses and production of peer-reviewed-journals quality graphs. After a brief explanation of what R is, I explained the major elements of the R language, and guided my colleagues to produce a live linear model and graph on a simple dataset. Then they replicated by their own the procedure on another dataset (according to the scientific method), and presented the results and conclusion to the audience.