As the whole course is in fact an R "package" (called ReMUSE), when you have it installed, you will be able to access the tutorials in the "Tutorial" tab in the panel at the top right.
These tutorials are ordered in alphabetical order, which is why we have given them a little particular names:
T00tuto for the very first oneT01rstudio for the one you are currently readingT02packages for packagesT03ggplot2 for ggplot2T04pheatmap for hetmaps