What you need for this book
The basic requirements for this book are the latest versions of R and RStudio, which you can download from the following URLs:
More software will be needed for a few specific recipes, which will be highlighted in the Getting Ready section of the respective recipe.
Just a closing note: all the software employed in this book is available for free for personal use, and the greatest advantage of them is that they are open source and powered by the R community.