The ARRL Operating Manual is the most comprehensive guide to Amateur Radio operating — everything you need to get involved, get active, and get on the air. Each topic has been written and updated by experienced hams. They are happy to share what they have learned so that you can get involved too.
Volume 1: Basic Station and Operating Techniques
Assembling a Station Basic Operating Procedures HF Digital Communications VHF/UHF FM, Repeaters, Digital Voice and Data VHF/UHF Beyond FM and Repeaters Amateur Satellites Image Communications Portable and Mobile Operation
Volume 2: Radio Clubs and Public Service
Group Activities for the Radio Amateur Preparing the Next Generation ARRL Field Day Public Service Operating
Also available: Volume 3: On-Air Activities and Radiosport Volume 4: Resources for the Active Ham
Imagine several books on Amateur Radio covering topics such as transmission, audio, video, antennas, radio setups, emergency tech, radio culture and best practices. Now imagine these disparate books all smashed together in one single analogy. That's pretty much what this book is.
To be fair this is a definitive book on Amateur Radio, there is so much knowledge there. It is just extremely hard to get through. When people say that a book "reads like an instruction manual", this is the book they are referring to, this is the instruction manual. I learned a lot, and will absolutely continue learning, but not from ARRL.
This is one of those books that briefly introduces you to everything. Nothing is covered in deep detail, but I think they did include just enough to not leave you hanging with questions.
This is also a resource that will stay available in my Hamshack. Lots of useful charts, tables and notes in the back of the book.
Realize that some topics like HF Digital modes are changing rapidly. So some material in the book is dated. But that's really alright for a book intended to introduce "everything".