There are two R script files to download. The first is here, R intro workshop script file.txt. The second is here, World Bank data and Googlevis.txt. Download these files to a directory of your choice.
Second, please see this handout of comprehension check exercises.
Another dataset we may use: Boston housing characteristics. While saved on this webpage as a .txt file, you should rename it with the extension .csv while saving it to your directory.
The Odum Institute, at the University of North Carolina at Chapel Hill maintains a set of introductory videos on installing and using R for the first time.
Google developers produced a series of YouTube videos on R, ranging from introductory to advanced usage.
The GVSU library subscribes to SpringerLink, which publishes an extensive series of books on R in their "Use R!" series. Search for this series in the SpringerLink database.