To use R markdown you will first need to install the
rmarkdown package in RStudio (or in the R console if you’re not using RStudio) and any package dependencies. You can find instructions on how to do this for both Windows and Mac OSX operating systems here. If you would like to create pdf documents (or MS Word documents) from your R markdown file you will also need to install a version of LaTeX on your computer. If you’ve not installed LaTeX before, we recommend that you install TinyTeX. Again, instructions on how to do this can be found here.