I just looked at the link, but didn't have a peek inside the e-book.
Instead, I scrolled down to the 'testimonials' and had a look through them.
There were a lot stating something similar to 'This is legit, not a scam or fake.'
This does not inspire me with any confidence, rather the opposite.
Please tell us the course you are taking and your intended career path within the automotive electronics field, so we can possibly suggest more suitable reference material for you to read. For instance, you may be interested in bus technology, lighting, occupant safety systems, powertrain management, body/chassis system management or motion control.