1) Quite a good read and I think a nice primer. I took a course in parallel and used this book for a bit in-depth reading. Although this isn't the newest version, I currently don't plan to actual take the exam. 2) This is a recension of my first read of the successor version due to a preparation for the exam. This is not going to be the last time I read it though. I think the never version is quite readable and with the usage of more media like summaries of chapters on a webpage, videos and animated gifs more memorisable. 3) After my second read of this edition I wonder what the point of some of the animated gifs is and I somehow miss a bit of a better central theme than the homematic thing. Oh and some words about the exam would be quite nice. For german speakers, I think this course is quite helpful: https://www.udemy.com/course/praxistests-ireb-foundation-level/ Anyway, off to my next read! 4) Last read - lead to a successful certification - it did.