Reading this was a frustrating experience. On the hand it contains more information than “What is Node” published by O’Reilly and I did learn something. On the other hand ... where were the proofreaders and editor for this book. What is wrong with this book? - missing whitespace: sometimes a command and parameter are glued together, but as it is all new, you do not know that, incorrect indentation which makes it harder to read the code - too much whitespace: function names get split up in several words, easier to detect, but annoying - too much is assumed to be known: open postman, fill in the required information and you will get the following data, I had used postman once before and I managed to get it working, but if you are new to this, good luck to you - lack of explanations: install this, change that, replace that, ... somewhere halfway through the exercise all I could do was copy/paste the code without knowing what I was doing - some things do not work out of the box on Windows