This introductory workshop helps clinical programmers begin using R for familiar data processing and reporting tasks. Using Base R and tidyverse packages, participants work through reading and writing data, creating data frames, sorting observations, and deriving new variables. Further topics include grouped processing, transposing data, stacking datasets, joining data, and producing reports. Demonstrations and exercises connect these operations to the types of work involved in clinical programming, including CDISC datasets and tables, listings, and figures. Training takes place in Posit Cloud with supplied programs and data, allowing participants to focus on understanding and practicing the core programming techniques.