The second part of the module is broadly based on using the R programming language, and in particular by RStudio. All of this is open source and freely downloadable.
Download R: https://cran.r-project.org
RStudio: https://www.rstudio.com/products/rstudio/download3/ — You’ll need the free ‘Desktop’ version. R and RStudio both work on Linux, Windows and MacOSX – so you should be able to find a version for your machine.
A good kick-start to R can be found on the the CRAN web page (https://cran.r-project.org) under Manuals/ An Introduction to R. The sections on Manuals, FAQs and Contributed also give some very useful material.