Biostatisticians use the R programming language for manipulating and visualizing data, as well as statistical analysis. Many online resources exist for learning R, and the below links provide some useful references.
In addition to the above links that provide a selection of top-rated R online courses, below are links for specific R resources and helpful sites.*
*Thanks to Kaitlin Maciejewski and the Yale Center for Analytical Sciences Young Scholars Program for contribution of resources.