One of the blog/book authors here (John Mount). Yes the book and blog are both by Nina Zumel and John Mount. Obviously my opinion is biased, but here is a bit

One of the blog/book authors here (John Mount). Yes the book and blog are both by Nina Zumel and John Mount. Obviously my opinion is biased, but here is a bit anyway. "R in Action" is one of our favorite R books (that and "The Art of R Programming"). "Practical Data Science with R" is more about working examples of data science (lots of the grungy tubing steps, how to think about some of the statistical tests, what sort of software to use at moderate data size). So if you would like the book depends a lot on if you are interested in those steps are not. My more hard-sell push of the book is here: http://www.win-vector.com/blog/2014/06/how-does-practical-data-science-with-r-stand-out/ http://www.win-vector.com/blog/2014/06/how-does-practical-da...