In order to fulfill the needs of an evolving job market, formal academic programs are continuously expanding computational training in traditional discipline-specific courses. We developed an informal, twelve contact-hour course tailored for economics students entering a computationally rigorous graduate-level course to help mitigate disparities in computing knowledge between students and prepare them for more advanced instruction within the formal setting. The course was developed to teach the R programming language to students without assuming any prior knowledge or experience in programming or the R environment. In order to allow for ease of implementation across various training approaches, the course was modularized with each section containing distinct topics and learning objectives. These modules can be easily developed as independent lessons so that disciplinespecific needs can be addressed through inclusion or exclusion of certain topics. This implementation used the R package 'learnr' to develop the course, which rendered a highly extensible and portable interactive Shiny document that can be deployed on any system on which RStudio is installed. The course is offered as a series of interactive sessions during which students are led through the Shiny notebook by an instructor. Owing to its structure, it can be offered as an asynchronous web-based set of tutorials as well.