By the end of this book, you will be able to create your very own gulp environments from scratch, create and maintain tasks and project builds, and automate your workflow with plugins and custom tasks.
All of this information can be found easily with a google search. He barely glosses over the most basic parts of gulp with the most basic sample architecture. He even uses myth instead of sass. I learned absolutely nothing. Do not purchase this book. Find a blog post & read other project's gulpfiles on github. Most of this is padding to make the book longer. He'll include text explaining a command, then code block showing the code, then screenshot of the code in his atom editor. Cash grab.
Bottom Line No, I would not recommend this to a friend