Not good; It assumes everything is run on windows. Not true a lot of PHP is run on linux based systems. It is also overly simplistic and uses some strange "common" terminology I have never encountered before. Save your money and Kindle memory and don't bother with this one!
I saw so many errors, typos, and inaccurate information just by looking into the preview of this piece (of whatever). It is written in almost unbelievably non-professional way from both IT and English language point of view.