This is the book that gave me the confidence and basic knowledge for me to take my first leap into homebrewing. I think it's excellent. checkout the authors website too.
This probably goes against the majority, but, I read another, older, well known/popular book about a year before I read the John Palmer book. That book scared me away from homebrewing. not relaxing at all for me. to be fair, I've never re-read it with the knowledge I've gained in the years since, but that was my just my own experience.
A wonderful book for sure! Some now-commonplace technical practices aren't covered in it (like BIAB) but the foundation it builds for you is extremely solid. Just be aware that there are other ways to accomplish the same goal, but the science and best practices covered in the book are pretty universal.