I have it and can definitely recommend it.
Version is v4, but that is not a problem.
But i would suggest to buy the PDF, not the printed book.
The printed book is very small (DIN A5 148mm*210mm) and hard to read if you are shortsighted like me 
I have it and can definitely recommend it.
Version is v4, but that is not a problem.
But i would suggest to buy the PDF, not the printed book.
The printed book is very small (DIN A5 148mm*210mm) and hard to read if you are shortsighted like me