|TryR is another great place to start learning R.|
The tutorial package can be downloaded as compressed source code according to the README file. This includes the R script that you can run and work through, as well as an R notebook file that includes the R output so you can see what examples of result output. Finally it includes an example dataset as a comma separated value (csv) file, which I use to illustrate how to import data into R.
If you want to start learning to code with R, definitely check out these workshop materials. It took us about an hour and a half to get through, so it's very doable. If you have any questions, or want to suggest a topic for the next tutorial, let me know in the comments below.